1400589 - select drop-down list's highlighted entry wiggles and becomes unhighlighted when scrolling on Mac (Nightly only)

Status: RESOLVED WORKSFORME

(Core :: Widget: Cocoa, defect, P3)

Description

[Chris Peterson [:cpeterson]]

STR:
1. On macOS, click on this bug's "Product" select drop down list.
2. Hover the mouse pointer over one of the list entries so the entry is highlighted.
3. Slowly scroll the list so the highlighted entry is no longer in the visible portion of the list. (I am scrolling with a MacBook Pro trackpad gesture.)
4. Slowly scroll the highlighted entry back into the visible portion of the list.

RESULT:

Two bugs:
1. As the list scrolls, the highlighted entry's highlight "wiggles" vertically and loses vertical alignment with the entry's text.
2. As the highlighted entry is scrolled back into the visible portion of the list, it is no longer highlighted

I can only reproduce these bugs on macOS and only in the Firefox Nightly channel, regardless of version. For example, I could not reproduce the bugs in Beta 55, but I *could* reproduce in Nightly 55 with mozregression. Nightly appears to use different macOS widget style than the Beta or Release channels.

Comment 1

[Chris Peterson [:cpeterson]]

This sounds a lot like fixed bug 1197913 or bug 1264271.

Comment 2

[Daniel Holbert [:dholbert]]

just ran across this old bug -- cpeterson, is this still an issue? Or can we close as WFM?

(I just tested on macOS Ventura with current Nightly, and I can't repro.)

Comment 3

[Chris Peterson [:cpeterson]]

WFM in Nightly 113 on macOS Ventrua 13.2.1.