404635 - ASSERTION: Have parent context and shouldn't after print preview and hovering over select

Status: REOPENED

(Core :: Layout, defect)

Description

[Martijn Wargers (dead)]

Attachment: binding needed for testcase

See upcoming testcase.
When doing print preview and after that, hovering over the select, I see these assertions in current debug trunk build:
###!!! ASSERTION: Have parent context and shouldn't: 'Error', file c:/mozilla-bu
ild/mozilla/layout/base/nsFrameManager.cpp, line 834
frame: Inline(span)(-1) (07A26B30) style: 07A26AE0 {}
Has parent context:  style: 0690CF70 {}
Should be null

###!!! ASSERTION: Have parent context and shouldn't: 'Error', file c:/mozilla-bu
ild/mozilla/layout/base/nsFrameManager.cpp, line 834
frame: Inline(span)(-1) (07A26B30) style: 07A26AE0 {}
Has parent context:  style: 0690CF70 {}
Should be null

Comment 1

[Martijn Wargers (dead)]

Attachment: testcase

Comment 2

[Jesse Ruderman]

See also bug 405186, which triggers the same assertion.

Comment 3

[Martijn Wargers (dead)]

Still happens with an updated debug trunk build.
I'm also seeing this with the dom inspector when choosing 2 times something different with the toolbarbutton type=menu which handles the viewer-list.