Percy tests do not capture movement of collapse link button on GELS

[luixxiul]

Steps to reproduce

This might be an upstream issue, but it seems that Percy tests do not capture movement of collapse link button on GELS (generic event list summary), introduced with matrix-org/matrix-react-sdk#10211.

Here are the Percy results which seem to have the issue (please check it by toggling original and new):

• Expanded GELS and with placeholder of deleted message
• Expanded GELS and with emote and placeholder of deleted message
• Expanded GELS and messages on IRC layout
• Event line with inline start margin on IRC layout

Those snapshots are built on this PR: matrix-org/matrix-react-sdk#10189

Outcome

What did you expect?

The horizontal row where collapse link button exists should be highlighted, as its movement (by matrix-org/matrix-react-sdk#10211) is exactly what caused the snapshot changes.

What happened instead?

Percy did not highlight the row. It highlights other parts instead, which I think is quite confusing to those who did not work on the change.

Operating system

No response

Browser information

No response

URL for webapp

No response

Application version

No response

Homeserver

No response

Will you send logs?

No

[andybalaam]

I agree the highlighting is unfortunate, but this is definitely a Percy issue, not Element Web, so closing.