diff --git a/native/redux/update-roles-and-permissions-test-data.js b/native/redux/update-roles-and-permissions-test-data.js
--- a/native/redux/update-roles-and-permissions-test-data.js
+++ b/native/redux/update-roles-and-permissions-test-data.js
@@ -8451,8 +8451,475 @@
     },
   };
 
+// Clear out contents of role permissions AND member permissions
+// AND current member permissions to ensure `updateRolesAndPermissions`
+// constructs them properly without dependingon anything from existing store.
+const threadStoreThreadsWithEmptyRoleAndMemberAndCurrentUserPermissions: ThreadStoreThreadInfos =
+  {
+    '1': {
+      color: 'b8753d',
+      community: null,
+      containingThreadID: null,
+      creationTime: 1679537878106,
+      currentUser: {
+        permissions: {},
+        role: '83795',
+        subscription: {
+          home: true,
+          pushNotifs: true,
+        },
+        unread: false,
+      },
+      description:
+        'This is the first community on Comm. In the future it will be possible to create chats outside of a community, but for now all of these chats get set with GENESIS as their parent. GENESIS is hosted on Ashoat’s keyserver.',
+      id: '1',
+      members: [
+        {
+          id: '256',
+          isSender: false,
+          permissions: {},
+          role: '83796',
+        },
+        {
+          id: '84589',
+          isSender: false,
+          permissions: {},
+          role: '83795',
+        },
+      ],
+      name: 'GENESIS',
+      parentThreadID: null,
+      pinnedCount: 0,
+      repliesCount: 0,
+      roles: {
+        '83795': {
+          id: '83795',
+          isDefault: true,
+          name: 'Members',
+          permissions: {},
+        },
+        '83796': {
+          id: '83796',
+          isDefault: false,
+          name: 'Admins',
+          permissions: {},
+        },
+      },
+      type: 12,
+    },
+    '84596': {
+      color: '575757',
+      community: '1',
+      containingThreadID: '1',
+      creationTime: 1680734420100,
+      currentUser: {
+        permissions: {},
+        role: '84597',
+        subscription: {
+          home: true,
+          pushNotifs: true,
+        },
+        unread: false,
+      },
+      description:
+        'This is your private chat, where you can set reminders and jot notes in private!',
+      id: '84596',
+      members: [
+        {
+          id: '256',
+          isSender: false,
+          permissions: {},
+          role: null,
+        },
+        {
+          id: '84589',
+          isSender: false,
+          permissions: {},
+          role: '84597',
+        },
+      ],
+      name: 'hillary',
+      parentThreadID: '1',
+      pinnedCount: 0,
+      repliesCount: 0,
+      roles: {
+        '84597': {
+          id: '84597',
+          isDefault: true,
+          name: 'Members',
+          permissions: {},
+        },
+      },
+      type: 7,
+    },
+    '84598': {
+      color: '5c9f5f',
+      community: '1',
+      containingThreadID: '1',
+      creationTime: 1680734420159,
+      currentUser: {
+        permissions: {},
+        role: '84599',
+        subscription: {
+          home: true,
+          pushNotifs: true,
+        },
+        unread: false,
+      },
+      description: '',
+      id: '84598',
+      members: [
+        {
+          id: '256',
+          isSender: true,
+          permissions: {},
+          role: '84599',
+        },
+        {
+          id: '84589',
+          isSender: false,
+          permissions: {},
+          role: '84599',
+        },
+      ],
+      name: '',
+      parentThreadID: '1',
+      pinnedCount: 0,
+      repliesCount: 0,
+      roles: {
+        '84599': {
+          id: '84599',
+          isDefault: true,
+          name: 'Members',
+          permissions: {},
+        },
+      },
+      type: 6,
+    },
+    '84627': {
+      color: 'aa4b4b',
+      community: '1',
+      containingThreadID: '1',
+      creationTime: 1680734427175,
+      currentUser: {
+        permissions: {},
+        role: '84628',
+        subscription: {
+          home: true,
+          pushNotifs: true,
+        },
+        unread: false,
+      },
+      description: '',
+      id: '84627',
+      members: [
+        {
+          id: '256',
+          isSender: false,
+          permissions: {},
+          role: null,
+        },
+        {
+          id: '83969',
+          isSender: false,
+          permissions: {},
+          role: '84628',
+        },
+        {
+          id: '84589',
+          isSender: false,
+          permissions: {},
+          role: '84628',
+        },
+      ],
+      name: '',
+      parentThreadID: '1',
+      pinnedCount: 0,
+      repliesCount: 0,
+      roles: {
+        '84628': {
+          id: '84628',
+          isDefault: true,
+          name: 'Members',
+          permissions: {},
+        },
+      },
+      type: 6,
+    },
+    '84656': {
+      color: '6d49ab',
+      community: '1',
+      containingThreadID: '1',
+      creationTime: 1680734490721,
+      currentUser: {
+        permissions: {},
+        role: '84657',
+        subscription: {
+          home: true,
+          pushNotifs: true,
+        },
+        unread: false,
+      },
+      description: '',
+      id: '84656',
+      members: [
+        {
+          id: '256',
+          isSender: false,
+          permissions: {},
+          role: null,
+        },
+        {
+          id: '83809',
+          isSender: true,
+          permissions: {},
+          role: '84657',
+        },
+        {
+          id: '83969',
+          isSender: true,
+          permissions: {},
+          role: '84657',
+        },
+        {
+          id: '84589',
+          isSender: false,
+          permissions: {},
+          role: '84657',
+        },
+      ],
+      name: 'group',
+      parentThreadID: '1',
+      pinnedCount: 0,
+      repliesCount: 0,
+      roles: {
+        '84657': {
+          id: '84657',
+          isDefault: true,
+          name: 'Members',
+          permissions: {},
+        },
+      },
+      type: 4,
+    },
+    '86071': {
+      color: '6d49ab',
+      community: '1',
+      containingThreadID: '1',
+      creationTime: 1681160151827,
+      currentUser: {
+        permissions: {},
+        role: '86072',
+        subscription: {
+          home: true,
+          pushNotifs: true,
+        },
+        unread: false,
+      },
+      description: '',
+      id: '86071',
+      members: [
+        {
+          id: '256',
+          isSender: false,
+          permissions: {},
+          role: null,
+        },
+        {
+          id: '84589',
+          isSender: true,
+          permissions: {},
+          role: '86072',
+        },
+        {
+          id: '85999',
+          isSender: true,
+          permissions: {},
+          role: '86072',
+        },
+      ],
+      name: '',
+      parentThreadID: '1',
+      pinnedCount: 0,
+      repliesCount: 0,
+      roles: {
+        '86072': {
+          id: '86072',
+          isDefault: true,
+          name: 'Members',
+          permissions: {},
+        },
+      },
+      type: 6,
+    },
+    '87789': {
+      color: '6d49ab',
+      community: '1',
+      containingThreadID: '1',
+      creationTime: 1682367957349,
+      currentUser: {
+        permissions: {},
+        role: '87790',
+        subscription: {
+          home: true,
+          pushNotifs: true,
+        },
+        unread: false,
+      },
+      description: '',
+      id: '87789',
+      members: [
+        {
+          id: '256',
+          isSender: false,
+          permissions: {},
+          role: null,
+        },
+        {
+          id: '83809',
+          isSender: false,
+          permissions: {},
+          role: null,
+        },
+        {
+          id: '83969',
+          isSender: false,
+          permissions: {},
+          role: '87790',
+        },
+        {
+          id: '84589',
+          isSender: false,
+          permissions: {},
+          role: '87790',
+        },
+      ],
+      name: 'Subthread',
+      parentThreadID: '84656',
+      pinnedCount: 0,
+      repliesCount: 0,
+      roles: {
+        '87790': {
+          id: '87790',
+          isDefault: true,
+          name: 'Members',
+          permissions: {},
+        },
+      },
+      type: 3,
+    },
+    '87817': {
+      color: '6d49ab',
+      community: '1',
+      containingThreadID: '1',
+      creationTime: 1682368005862,
+      currentUser: {
+        permissions: {},
+        role: '87818',
+        subscription: {
+          home: true,
+          pushNotifs: true,
+        },
+        unread: false,
+      },
+      description: '',
+      id: '87817',
+      members: [
+        {
+          id: '256',
+          isSender: false,
+          permissions: {},
+          role: null,
+        },
+        {
+          id: '83809',
+          isSender: false,
+          permissions: {},
+          role: null,
+        },
+        {
+          id: '83969',
+          isSender: false,
+          permissions: {},
+          role: '87818',
+        },
+        {
+          id: '84589',
+          isSender: true,
+          permissions: {},
+          role: '87818',
+        },
+      ],
+      name: '',
+      parentThreadID: '84656',
+      pinnedCount: 0,
+      repliesCount: 0,
+      roles: {
+        '87818': {
+          id: '87818',
+          isDefault: true,
+          name: 'Members',
+          permissions: {},
+        },
+      },
+      type: 3,
+    },
+    '87837': {
+      color: '6d49ab',
+      community: '1',
+      containingThreadID: '86071',
+      creationTime: 1682368041060,
+      currentUser: {
+        permissions: {},
+        role: '87838',
+        subscription: {
+          home: true,
+          pushNotifs: true,
+        },
+        unread: false,
+      },
+      description: '',
+      id: '87837',
+      members: [
+        {
+          id: '256',
+          isSender: false,
+          permissions: {},
+          role: null,
+        },
+        {
+          id: '84589',
+          isSender: true,
+          permissions: {},
+          role: '87838',
+        },
+        {
+          id: '85999',
+          isSender: false,
+          permissions: {},
+          role: '87838',
+        },
+      ],
+      name: 'Hello',
+      parentThreadID: '86071',
+      pinnedCount: 0,
+      repliesCount: 1,
+      roles: {
+        '87838': {
+          id: '87838',
+          isDefault: true,
+          name: 'Members',
+          permissions: {},
+        },
+      },
+      sourceMessageID: '86339',
+      type: 5,
+    },
+  };
+
 export {
   threadStoreThreads,
   threadStoreThreadsWithEmptyRolePermissions,
   threadStoreThreadsWithEmptyRolePermissionsAndMemberPermissions,
+  threadStoreThreadsWithEmptyRoleAndMemberAndCurrentUserPermissions,
 };
diff --git a/native/redux/update-roles-and-permissions.js b/native/redux/update-roles-and-permissions.js
--- a/native/redux/update-roles-and-permissions.js
+++ b/native/redux/update-roles-and-permissions.js
@@ -48,7 +48,6 @@
   threadStoreInfos: ThreadStoreThreadInfos,
 ): ThreadStoreThreadInfos {
   const updatedThreadStoreInfos = { ...threadStoreInfos };
-  const rootNodes = constructThreadTraversalNodes(updatedThreadStoreInfos);
 
   const recursivelyUpdateRoles = (node: $ReadOnly<ThreadTraversalNode>) => {
     const threadInfo: RawThreadInfo = updatedThreadStoreInfos[node.threadID];
@@ -65,8 +64,6 @@
     return node.children?.map(recursivelyUpdateRoles);
   };
 
-  rootNodes.map(recursivelyUpdateRoles);
-
   const recursivelyUpdatePermissions = (
     node: $ReadOnly<ThreadTraversalNode>,
     memberToThreadPermissionsFromParent: ?MemberToThreadPermissionsFromParent,
@@ -110,8 +107,45 @@
     );
   };
 
-  rootNodes.map(node => recursivelyUpdatePermissions(node, null));
+  const recursivelyUpdateCurrentMemberPermissions = (
+    node: $ReadOnly<ThreadTraversalNode>,
+    permissionsFromParent: ?ThreadPermissionsBlob,
+  ) => {
+    const threadInfo: RawThreadInfo = updatedThreadStoreInfos[node.threadID];
+    const { currentUser, roles } = threadInfo;
+    const { role } = currentUser;
 
+    const rolePermissions = role ? roles[role].permissions : null;
+    const computedPermissions = makePermissionsBlob(
+      rolePermissions,
+      permissionsFromParent,
+      threadInfo.id,
+      threadInfo.type,
+    );
+
+    updatedThreadStoreInfos[node.threadID] = {
+      ...threadInfo,
+      currentUser: {
+        ...currentUser,
+        permissions: getAllThreadPermissions(
+          computedPermissions,
+          threadInfo.id,
+        ),
+      },
+    };
+
+    return node.children?.map(child =>
+      recursivelyUpdateCurrentMemberPermissions(
+        child,
+        makePermissionsForChildrenBlob(computedPermissions),
+      ),
+    );
+  };
+
+  const rootNodes = constructThreadTraversalNodes(updatedThreadStoreInfos);
+  rootNodes.map(recursivelyUpdateRoles);
+  rootNodes.map(node => recursivelyUpdatePermissions(node, null));
+  rootNodes.map(node => recursivelyUpdateCurrentMemberPermissions(node, null));
   return updatedThreadStoreInfos;
 }
 
diff --git a/native/redux/update-roles-and-permissions.test.js b/native/redux/update-roles-and-permissions.test.js
--- a/native/redux/update-roles-and-permissions.test.js
+++ b/native/redux/update-roles-and-permissions.test.js
@@ -4,6 +4,7 @@
   threadStoreThreads,
   threadStoreThreadsWithEmptyRolePermissions,
   threadStoreThreadsWithEmptyRolePermissionsAndMemberPermissions,
+  threadStoreThreadsWithEmptyRoleAndMemberAndCurrentUserPermissions,
 } from './update-roles-and-permissions-test-data.js';
 import { updateRolesAndPermissions } from './update-roles-and-permissions.js';
 
@@ -27,4 +28,12 @@
       ),
     ).toStrictEqual(threadStoreThreads);
   });
+
+  it('should construct role permissions AND member permissions AND current user permissions when missing from existing store', () => {
+    expect(
+      updateRolesAndPermissions(
+        threadStoreThreadsWithEmptyRoleAndMemberAndCurrentUserPermissions,
+      ),
+    ).toStrictEqual(threadStoreThreads);
+  });
 });