element-hq / element-hq/synapse

Most recent room name change should be accessible to new members even if there are history visibility changes

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A-Invite A-Sync T-Defect
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Python
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Description

This issue has been migrated from [#2336](https://github.com/matrix-org/synapse/issues/2336).

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Not sure if it is bug or a worksform but it seems weird:

1. UserA creates a room
1. UserA set visibility as open
1. UserA change the name of the room to `RoomTest1`
1. UserB joins the room
1. UserA set visibility as *only since the moment member is invited*
1. UserA change the name of the room to `RoomTest2`
1. UserA invite UserC
1. UserC joins the rooms:

Result:

* UserA and UserB see `RoomTest2`
* UserC see `RoomTest1`

Shouldn't the last change name be accessible for a new member?

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