In Ubuntu 20.04, when I use the Tweaks app to change the titlebar buttons to the left (instead of the default right), the titlebar becomes greyed out (or rather black).
It seems that placing the buttons on the left does not leave enough space for the side navigation block with the default window size for Tweaks.
Sometimes, when I open Tweaks and I see the titlebar has been greyed out, I change the window size and the titlebar appears again, but this does not always happen.
Here we see the correct titlebar with the buttons on the right by default.
The moment I change the buttons to the left, the title bar becomes black and the side navigation block disappears.
If I resize the window (so the navigation block can be seen again), the titlebar returns, but this not always happens.
Even when the titlebar returns by readjusting the window size, I feel like the buttons position is not completely correct... See for example the Settings window below, which also has a side navigation block and gives me no problem whatsoever. The close, minimize and maximize buttons are not all the way to the left, but stop at the side navigation block (or maybe it is not correct in Settings...).
Any clue why this happens and how to solve it? Or am I stuck with titlebar buttons on the right only? Thanks!
I'm afraid I don't know about Tweaks.
But to move the title bar buttons to the left, the easiest way is to just copy/paste this command:
It takes effect immediately.