diff --git a/spec/integ/matrix-client-syncing.spec.js b/spec/integ/matrix-client-syncing.spec.js
index 6adb35a50c0..7c33f0948ea 100644
--- a/spec/integ/matrix-client-syncing.spec.js
+++ b/spec/integ/matrix-client-syncing.spec.js
@@ -1,5 +1,20 @@
-import { MatrixEvent } from "../../src/models/event";
-import { EventTimeline } from "../../src/models/event-timeline";
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { EventTimeline, MatrixEvent, RoomEvent } from "../../src";
 import * as utils from "../test-utils/test-utils";
 import { TestClient } from "../TestClient";
 
@@ -60,6 +75,112 @@ describe("MatrixClient syncing", function() {
                 done();
             });
         });
+
+        it("should emit Room.myMembership for invite->leave->invite cycles", async () => {
+            const roomId = "!cycles:example.org";
+
+            // First sync: an invite
+            const inviteSyncRoomSection = {
+                invite: {
+                    [roomId]: {
+                        invite_state: {
+                            events: [{
+                                type: "m.room.member",
+                                state_key: selfUserId,
+                                content: {
+                                    membership: "invite",
+                                },
+                            }],
+                        },
+                    },
+                },
+            };
+            httpBackend.when("GET", "/sync").respond(200, {
+                ...syncData,
+                rooms: inviteSyncRoomSection,
+            });
+
+            // Second sync: a leave (reject of some kind)
+            httpBackend.when("POST", "/leave").respond(200, {});
+            httpBackend.when("GET", "/sync").respond(200, {
+                ...syncData,
+                rooms: {
+                    leave: {
+                        [roomId]: {
+                            account_data: { events: [] },
+                            ephemeral: { events: [] },
+                            state: {
+                                events: [{
+                                    type: "m.room.member",
+                                    state_key: selfUserId,
+                                    content: {
+                                        membership: "leave",
+                                    },
+                                    prev_content: {
+                                        membership: "invite",
+                                    },
+                                    // XXX: And other fields required on an event
+                                }],
+                            },
+                            timeline: {
+                                limited: false,
+                                events: [{
+                                    type: "m.room.member",
+                                    state_key: selfUserId,
+                                    content: {
+                                        membership: "leave",
+                                    },
+                                    prev_content: {
+                                        membership: "invite",
+                                    },
+                                    // XXX: And other fields required on an event
+                                }],
+                            },
+                        },
+                    },
+                },
+            });
+
+            // Third sync: another invite
+            httpBackend.when("GET", "/sync").respond(200, {
+                ...syncData,
+                rooms: inviteSyncRoomSection,
+            });
+
+            // First fire: an initial invite
+            let fires = 0;
+            client.once(RoomEvent.MyMembership, (room, membership, oldMembership) => { // Room, string, string
+                fires++;
+                expect(room.roomId).toBe(roomId);
+                expect(membership).toBe("invite");
+                expect(oldMembership).toBeFalsy();
+
+                // Second fire: a leave
+                client.once(RoomEvent.MyMembership, (room, membership, oldMembership) => {
+                    fires++;
+                    expect(room.roomId).toBe(roomId);
+                    expect(membership).toBe("leave");
+                    expect(oldMembership).toBe("invite");
+
+                    // Third/final fire: a second invite
+                    client.once(RoomEvent.MyMembership, (room, membership, oldMembership) => {
+                        fires++;
+                        expect(room.roomId).toBe(roomId);
+                        expect(membership).toBe("invite");
+                        expect(oldMembership).toBe("leave");
+                    });
+                });
+
+                // For maximum safety, "leave" the room after we register the handler
+                client.leave(roomId);
+            });
+
+            // noinspection ES6MissingAwait
+            client.startClient();
+            await httpBackend.flushAllExpected();
+
+            expect(fires).toBe(3);
+        });
     });
 
     describe("resolving invites to profile info", function() {
diff --git a/src/sync.ts b/src/sync.ts
index eee27af170f..b7f03400bfa 100644
--- a/src/sync.ts
+++ b/src/sync.ts
@@ -1166,6 +1166,9 @@ export class SyncApi {
                 room.recalculate();
                 client.store.storeRoom(room);
                 client.emit(ClientEvent.Room, room);
+            } else {
+                // Update room state for invite->reject->invite cycles
+                room.recalculate();
             }
             stateEvents.forEach(function(e) {
                 client.emit(ClientEvent.Event, e);