Sublist can still fail to refresh correctly after removing filters (and community filters)?

[ara4n]

Some combination of unfiltering the roomlist is causing blank patches to appear in the RoomSubLists still. I don't think this is a layout alg issue as much as the rerender optimisation failing in some scenario when you change the list filtering.

If you scroll it by even 1 pixel, the missing labels immediately get rerendered.

take a look at the blank people section:

[ara4n]

still getting precisely this even after travis' ordering rewrite landed

[bwindels]

matrix-org/matrix-react-sdk#2681 landed today containing further fixes. Do you still see this?

[lampholder]

Related #8801

@ara4n have you seen this again since matrix-org/matrix-react-sdk#2681 20 days ago? Can we close this if not?

[ara4n]

i get this absolutely constantly, i'm afraid; about 1 in 3 times i remove a filter.

[ara4n]

case in point:

[bwindels]

As I can't repro at all on my account, I suspect you need a large number of rooms in a section for the lazyrenderlist to screw up. So that would indicate it's not sort-related, but lazyrenderlist related. Will try to test with a larger account.

[bwindels]

Tried with davetest (which isn't as large as your account) and could not reproduce. Does the People section have a scrollbar when this happens? Also, is it always the People section or happens with e.g. Rooms as well?

[bwindels]

Also, could you please copy the DOM from the inspector (e.g. Copy as HTML) for the whole RoomSubList when you see it happening again?

[ara4n]

i get this almost constantly. but i'd missed the questions here - will do so next time i see it. (although if letterboxes are going away i'm not sure we want to spend /too/ much time on this)

[ara4n]

got this just now - @bwindels: I DM'd you with the innerHTML of the sublist from FF.