1487075 - The "Disable/Enable Blocking for this site" button turns black upon clicking it in High-Contrast mode

Status: NEW

(Core :: Widget: Gtk, defect, P5)

Description

[Timea Cernea [:tbabos][inactive]]

Attachment: Screenshot of the clicked button state

[Affected versions]
63.0a1 (2018-08-22)

[Affected platforms]
only on Ubuntu with High-Contrast mode

[Steps to reproduce]
1. Open Firefox and in the Hamburger Menu, click on Content Blocking
2. about:preferences#privacy will be opened and Content Blocking section will be focused
3. Set Slow tracking element to "Always block"
4. Set Trackers to "Never block"
5. Access: https://www.reddit.com/ (or any other site with slow trackers)
6. Open "Show site information" from the address bar
7. Click or click and don't release the "Disable/Enable Blocking for this site" button.

[Expected result]
The button's clicked visual state is correctly displayed.

[Actual result]
The button turns black upon clicking on it.

Comment 1

[(no longer active)]

Dao, any idea how we usually test/fix these types of issues, especially without access to a high contrast theme?  Is there an easy way to simulate the activation of this theme in the browser?

Comment 2

[Dão Gottwald [:dao]]

(In reply to :Ehsan Akhgari from comment #1)
> Dao, any idea how we usually test/fix these types of issues, especially
> without access to a high contrast theme?  Is there an easy way to simulate
> the activation of this theme in the browser?

No... A VM with Ubuntu should do the trick.

This appears to be a more fundamental bug that manifests in many different places. E.g. I see the same on <select>s on this very bugzilla page.

Comment 3

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1552613