1555807 - Third developer themes don't display correctly on screen resolution of 3200px width (and probably beyond)

Status: RESOLVED WONTFIX

(WebExtensions :: Themes, defect)

Description

[radar]

Attachment: FF67 2019-05-30.png

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:66.0) Gecko/20100101 Firefox/66.0

Steps to reproduce:

I installed several themes mon iMac 5K. This iMac has a display of 3200 x 1800px in retina mode.

Some themes are plain color some other include gradients or possibly images.

Actual results:

The theme doesnt display correct, it seems it breaks in the middle of the tab bar (cf. screenshot).

This happens on all themes I had been trying so far.

Expected results:

The theme should display on the whole window.
The theme should have no problem on retina display.

Comment 1

[radar]

Maybe a solution :

Mozilla should require the theme creator to either :

• Care about very large screen
• Add an information on the theme description page saying it handles only certain screen size

OR

FF "theme engine" should repeat the theme to fill the gap

Comment 2

[James Heppell [:FormularSumo]]

I have had the same problem happen to me over the past few months. This only happens on my main 1080p monitor, never on my 2nd 768p one and it only happens occasionally, the rest of the time the theme fits fine. It doesn't seem like the theme can't stretch because when it breaks it looks like it's just stopped showing on part of the UI. I'm running Firefox 67 right now but this has happened on earlier versions as well. I'm also using windows 10 version 1903.

Comment 3

[James Heppell [:FormularSumo]]

Attachment: Bug

Comment 4

[James Heppell [:FormularSumo]]

Attachment: How theme should display.png

This is how the theme should, and does usually display as. If you compare it to bug.png you can see that the problem isn't that the theme doesn't stretch far enough but that it stops displaying past a certain point (it's always the same point where it cuts off)

Comment 5

[Alex Cornestean]

The issue can be reproduced on the latest Release version (67.0 / 20190516215225), Beta (68.0b6 / 20190529145824) and Nightly (69.0a1 / 20190604034844) by following the above STR under ‘Windows 10 Pro 64-bit’ and ‘Ubuntu 18.04.2 LTS’.

Comment 6

[Kris Maglione [:kmag]]

Themes have the ability to specify fallback background colors, and layered background images with some layers tiling. For themes that don't do this (e.g., legacy lightweight themes that have been migrated), there isn't really anything we can do.

(In reply to James from comment #2)

I have had the same problem happen to me over the past few months. This only happens on my main 1080p monitor, never on my 2nd 768p one and it only happens occasionally, the rest of the time the theme fits fine. It doesn't seem like the theme can't stretch because when it breaks it looks like it's just stopped showing on part of the UI. I'm running Firefox 67 right now but this has happened on earlier versions as well. I'm also using windows 10 version 1903.

This is probably an unrelated issue due to the legacy header image cropper. That code doesn't exist anymore.