1495023 - Transparent bar behind tabs

Status: RESOLVED DUPLICATE of bug 1447775

(Core :: Widget: Gtk, defect)

Description

[James Gilliland]

Attachment: Selection_222.jpg

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:64.0) Gecko/20100101 Firefox/64.0
Build ID: 20180928100051

Steps to reproduce:

Start Firefox Nightly


Actual results:

The bottom of the tab section is transparent instead of the correct background color.


Expected results:

The entire top bar should be correctly colored.

Comment 1

[James Gilliland]

A couple of additional notes.

I haven't been paying close attention but I think it started when I updated yesterday morning, it wasn't fixed this morning so I'm filing the bug to make sure its visible.

It only seems to happen when first starting Firefox, it can happen on multiple windows, and moving the windows doesn't fix it but resizing it does and I don't think I've seen it come back.

Comment 2

[James Gilliland]

I've since found I'm actually able to recreate this by "maximizing" and then "un-maximizing" the window. Interestingly this reveals something that seems useful(at least to me). When maximized, tabs press 100% against the top and the tab area is slightly smaller. When you un-maximize, the section briefly remains smaller with the tabs against the top then it "pops" and the tabs drop down revealing the transparency. The transparent section seems to be the exact size of the expansion like this resizing doesn't trigger a corresponding redraw of the background.

Comment 3

[Dão Gottwald [:dao]]

Could this be caused by bug 1493145?

Comment 4

[Martin Stránský [:stransky] (ni? me)]

(In reply to Dão Gottwald [::dao] from comment #3)
> Could this be caused by bug 1493145?

Yes, definitely. I suspect Gtk+ theme defines transparent color for GtkHeaderBar background. James, which theme do you use and which desktop environment do you run?

Comment 5

[James Gilliland]

Default Firefox theme.
Ubuntu 18.04
Gnome 3 (3.28.2) 
Adwaita-dark Gnome theme.

Comment 6

[Martin Stránský [:stransky] (ni? me)]

(In reply to James Gilliland from comment #5)
> Default Firefox theme.
> Ubuntu 18.04
> Gnome 3 (3.28.2) 
> Adwaita-dark Gnome theme.

Thanks. I'm unable to reproduce on Fedora 29 / Adwaita-dark theme. May be Ubuntu or Gnome 3.28 related.

Comment 7

[Martin Stránský [:stransky] (ni? me)]

btw. Do you have drag space enabled? (at Customize -> Drag space).

Comment 8

[Martin Stránský [:stransky] (ni? me)]

Yes, I can reproduce that with drag space enabled - we need to extend the titlebar size when dragspace is on.

Comment 9

[James Gilliland]

Ah, yes drag space seems to be the key, good catch. Sorry I didn't get the notification quickly.

As noted, for what ever reason resizing fixes height. Not sure if that actually changes the height or what but its interesting.

Comment 10

[Martin Stránský [:stransky] (ni? me)]

(In reply to James Gilliland from comment #9)
> As noted, for what ever reason resizing fixes height. Not sure if that
> actually changes the height or what but its interesting.

That may be Bug 1447775

Comment 11

[Martin Stránský [:stransky] (ni? me)]

It's a variant of Bug 1447775 - when drag space is not covered by titlebar background until the window is resized. Closing as dupe.