I just updated my Flatpak of Brave (stable release) on Fedora KDE, and the titlebar enabled itself, so I turned it off but when I did that I am unable to drag the window around anywhere and it stays in fullscreen mode. With the titlebar enabled, it works just as it should, but without it, it does not.
All I have is the latest release of Fedora 41 with KDE Plasma, and I have Brave installed as a Flatpak from Flathub. I am using Wayland.
Brave Version( check About Brave): Version 1.75.180 Chromium: 133.0.6943.126 (Official Build) unknown (64-bit)