757533 - amazing drifting context menu

Status: RESOLVED WORKSFORME

(Core :: Widget: Cocoa, defect)

Description

[Ralph Giles (:rillian)]

Today I got an amazing drifting context menu on a video element. It is usually reproducible.

Firefox Nightly 15.0a1 (2012-05-16) on MacOS X 10.7.4.

Steps:

1. Visit https://www.mozilla.org/en-US/webmaker/videos/
2. Click on the video poster to start it playing
3. Right-click on the playing video to bring up the context menu
4. Move the mouse into the context menu
5. Move the mouse out of the context menu without closing it
6. Move the mouse out of the video frame, into the left page margin
7. Move the mouse back into the video frame
8. Context menu starts drifting down and the the right

Comment 1

[Ralph Giles (:rillian)]

Attachment: screenshot showing the out of place menu

Note that the menu is actively moving down and to the right from the original click point near the centre of the video, jumping back up in y when it hits the top of the dock.

Comment 2

[Jesper Hansen]

Amazingness not available on windows :(

Comment 3

[Ralph Giles (:rillian)]

Amazingness is also not available on Linux.

Issue also occurs with today's Nightly 15.0a1 (2012-05-22) on MacOS X.

It's not necessary to start the video playing. The context menu still drifts if it's opened first, but it only moves when the mouse pointer is moving, or very slowly. Different update rate?

Comment 4

[Steven Michaud [:smichaud] (Retired)]

Does this also happen in FF 12, or in one of the FF 13 betas?

Comment 5

[Ralph Giles (:rillian)]

I cannot reproduce on Aurora 14.0a2 (2012-05-22).

Comment 6

[Ralph Giles (:rillian)]

Nor on 12.0.

Comment 7

[Ralph Giles (:rillian)]

I can't reproduced this on the released Firefox 15.0 on MacOS X 10.7.4.