Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Non-native scrollbar setting not working in Firefox 90

Radu Rendec
Radu Rendec
more options

I'm using Firefox 90 on Linux (Fedora 33) and MATE Desktop. Before I upgraded to Firefox 90, I set widget.non-native-theme.enabled to false to revert the scrollbar appearance to the system theme, as per this question: Scrollbar appearance changed after Firefox upgrade. It worked on Firefox 89, but as soon as I upgraded to Firefox 90, the scrollbars went back to the non-native appearance.

After the upgrade, the widget.non-native-theme.enabled is still set to false, but apparently ignored. However, I noticed that the other widget.non-native-theme.gtk.scrollbar.* settings that allow scrollbar appearance customization inside Firefox are ignored as well. If I set widget.non-native-theme.enabled back to true, then the other scrollbar settings work as expected. This tells me that widget.non-native-theme.enabled does work, but the system scrollbar theme is not picked up as expected. This looks like a bug to me.

I'm using Firefox 90 on Linux (Fedora 33) and MATE Desktop. Before I upgraded to Firefox 90, I set widget.non-native-theme.enabled to false to revert the scrollbar appearance to the system theme, as per this question: [https://support.mozilla.org/en-US/questions/1342934 Scrollbar appearance changed after Firefox upgrade]. It worked on Firefox 89, but as soon as I upgraded to Firefox 90, the scrollbars went back to the non-native appearance. After the upgrade, the widget.non-native-theme.enabled is still set to false, but apparently ignored. However, I noticed that the other widget.non-native-theme.gtk.scrollbar.* settings that allow scrollbar appearance customization inside Firefox are ignored as well. If I set widget.non-native-theme.enabled back to true, then the other scrollbar settings work as expected. This tells me that widget.non-native-theme.enabled does work, but the system scrollbar theme is not picked up as expected. This looks like a bug to me.

Modified by Radu Rendec

All Replies (2)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Are you using a GTK 3 theme in Linux as older GTK 2 themes might not work properly ?

Radu Rendec
Radu Rendec Question owner
more options

The system theme applies to both GTK 2 and GTK 3 applications. Scrollbars look normal in all other GTK 3 applications. For what is worth, the same theme worked just fine in Firefox 89.