75409 - Submenus of Bookmarks open small menu, then expand to full size

Status: RESOLVED WORKSFORME

(Core :: XUL, defect)

Description

[Mike Pinkerton (not reading bugmail)]

Recently, something has regressed which causes XPMenus on the mac (such as the 
bookmarks popup in the personal toolbar) to look horrible when submenus appear. 
You see a distinct flash as the submenu appears at a small size (looks like 
10x10) then grows to its real size. I don't see this on win32, but then we never 
notice these kinds of problems on win32 because it paints so quickly.

I wonder if it's something to do with the new view manager. Changes there 
generally affect submenu sizing and positioning. What's the name of the pref to 
turn the new view manager off again?

Comment 1

[Robert O'Callahan (:roc) (email my personal email if necessary)]

user_pref("nglayout.debug.enable_scary_view_manager", false);

Comment 2

[Mike Pinkerton (not reading bugmail)]

ok, it doesn't appear to be the new view manager (if setting that pref is really
all you need to do turn it off). [aside: At what point are we going to remove
this pref and the old view manager?]

Comment 3

[Robert O'Callahan (:roc) (email my personal email if necessary)]

> if setting that pref is really all you need to do turn it off

It is, honest! :-)

> [aside: At what point are we going to remove this pref and the old view
> manager?]

When people find that this pref no longer helps make bugs go away, I guess. The 
sooner the better, since right now view manager interface changes require 
maintenance work in the old, horrendously broken view manager.

Comment 4

[Mike Pinkerton (not reading bugmail)]

ok, this is really a bookmarks issue since RDF streams in bookmarks.

not much we can do about it, though, and it will only happen the first time 
around for any menu. I'm sure this happens on all platforms, just is only visible 
on mac.

what does everyone think? still catfud?

Comment 5

[Thomas]

Mike, 
If I understand well this is a Mac only issue? Shouldn't the target OS be
changed from "all" to "Mac"?

BTW, is this still an issue?

Comment 6

[Clara Guerrero ( Need Info Brindusa Tot Please)]

Cannot repro in macOS 10.15 nor 11, on latest release, beta and nightly builds.
Closing this as WFM, please feel free to reopen if you can still reproduce on your end.
Best,
Clara