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Thick white border around three sides of browser

Firefox Troubleshooting
hossuru replied
hossuru
hossuru

Hi, I suddenly have a thick white border around three sides of browser that I can't rid of. I did a search here and found what looked like a solution but there is no "Customize" button in FF any longer, so not sure how to fix this.

It is not running in compatibility mode either.

Thanks all

Hi, I suddenly have a thick white border around three sides of browser that I can't rid of. I did a search here and found what looked like a solution but there is no "Customize" button in FF any longer, so not sure how to fix this. It is not running in compatibility mode either. Thanks all
hossuru
hossuru Question owner
Read this answer in context

Chosen Solution

Enabling the system title bar got rid of it, appreciated.

All Replies (5)

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

If you have enabled "Resist Fingerprinting", set this pref on the about:config page to false to disable this feature.

hossuru
hossuru Question owner

privacy.resistFingerprinting is set to False

When I first open the app it's OK, but if I minimize it to the taskbar, when I reopen it it's messed up. Starting it in safe mode doesn't help either.

Modified by hossuru

zeroknight
zeroknight

Does it still happen on a single monitor set to 100% DPI scaling?

Does it go away if you enable the system titlebar in Customize mode?

Have you installed a custom Windows theme?

Does it still happen in Troubleshoot Mode?

hossuru
hossuru Question owner

Chosen Solution

Enabling the system title bar got rid of it, appreciated.