1895684 - bookmarks folder menu partially not rendered until mouse moves to different content

Status: RESOLVED DUPLICATE of bug 1894298

(Core :: Graphics, defect)

Description

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

Attachment: screenshot: bookmark folder menu partially missing

Firefox 127.0a1 20240507214419 on Windows 10, AMD Radeon on-chip graphics + Nvidia dedicated GPU

If I open a bookmark folder which contains ~40 bookmarks in the bookmark toolbar, the first items are not rendered until the mouse gets moved to a different UI object than the bookmark folder (see screenshot).

To reproduce the issue, I have to interact with the page afterwards (clicking a link to a new page is sufficient). Reproducing in a new browser window succeeds if I use this page or similar again.