GNOME, Wayland, and Chromium-based browsers

Is that mean the bug is also present in Plasma Wayland?

Yes.
These 2 screenshots are from Gnome 49 Arch and a friend’s system with KDE Plasma 6.5.3 of Opera Browser.

It’s not really a bug.

We use bug even if it is a mistake.

I know this is out of context. Recommend me a browser plz.

I use the one that I package on the distro I use.