I have a problem everytime I resize some application it'll have double title bar on top. First time I experience it with Mozilla firefox, I thought it was firefox problem but not because it's only occur in vscodium code any other application which have custom title bar.
Before resizing.
After resizing.
I don't know is anybody here have some problem like me. Thanks anyway.
You were right the first time.
Technically it's a GNOME problem, since they're the real cause of it: but you're running a pre-release build of a version of Firefox that uses a broken version of GTK in a broken way, so, yeah... really not surprising that it's got problems. 
https://bugzilla.mozilla.org/ is where this needs to go.
Yes but also occur in wps, vscodium or any app with it's custom title bar, so i assume the problem is in my ubuntu not in each app. And then what should i do to fix this problem in each application i mentioned ? Thank anyway
