Unity buttons in the top bar are grayed out on Linux

I guess you are in Garuda team so check my profile, I write question and sametime give answer and mark it as done so every one can get the right answer
In total I have asked 6 question in this website and give the answer of 4 by my self, 2 i didnt get it and one is this one. If I am taking time for helping other and didnt get a single question then I am bad?

proves:
1

2
https://forum.garudalinux.org/t/i-accidentely-removed-to-menu-bar/6805/34
3
https://forum.garudalinux.org/t/opening-kdenlive-change-my-customization-and-shift-to-random-place/10612/4
4
https://forum.garudalinux.org/t/screen-flicker-in-simple-screen-recorder/10518/3
5

and this is 6th

I didnt get answer for 5th one , no reply
and in this I didnt understand
what to do?