State reset in a v5 room

[richvdh]

When current matrix HQ (!QtykxKocfZaZOUrTwp:matrix.org) was created, @aaron:raim.ist was incorrectly banned.

I later unbanned him (event_id $VzzqXFV0YpBgpHJhJz8GnurbSXuGAycgyDg5rLj5ksI).

However, the ban is now back in place. This appears to have happened when $FEqkc7QX6npeGWhKGGxMfFv6cl9TbQNkQsH3fWZpet0 arrived on 2019-12-09.

Initial investigation suggests that this is due to the fact that the unban is missing the ban from its auth_events.

[richvdh]

fixed by #6556, I hope

[aaronraimist]

So for #6556 and #6560 to fix my issue, do I need to be like rebanned and then unbanned again?

[turt2live]

(have tried this anyways, as it's worth a shot)

[aaronraimist]

Ftr: It seems to have worked, at least for now. It took a while for me to get into the room. I tried to join it several times but Riot just showed a loading screen (from other servers it appeared that I had joined). Clearing my cache didn't make the room to show up in Riot but today I restarted Synapse and now I can see the room again.