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themes disappear even though they are enabled after the firefox quantum update. How do you keep the themes?
When Firefox upgraded to Firefox quantum, my custom theme on the toolbars at the top of the browser is no longer showing. When I went to customize the appearance settings it claims that the custom theme I used to see is indeed enabled, but you still can't see it. When you disable it and then re-enable it again, the theme shows up until you click on something and then it disappears again. Are old themes not compatible with the new firefox? Is there a way I get my old custom theme to show up?