using fedora kde and plasma 6.7,
there’s a weird bug in my window, the click is registered few pixels above where the cursor is displayed.
Now everywhere, in tabs of firefox and chrome and titlebars.
i am also using polonium
Does it continue to happen if you turn off Polonium?
the bug appears only when i use a tiling window manager
i found the culprit:
from claude
That confirms it — this is a known, documented KWin behavior (KDE bug tracker
T8707): when a window's edge touches the screen edge, KWin reserves a thin
invisible resize-grab strip along that edge that overlaps the window's own content. Since Krohnkite tiles windows edge-to-edge (especially with borders/gaps removed), your browser's top edge sits flush against the screen edge, so the top few pixels of the tab bar are being intercepted as a resize handle instead of passing the click through to the tab — exactly matching "I have to click the lower border of the tab to register."
This mostly hits maximized or top-edge-tiled borderless windows with CSD-style tab bars (Chrome/Firefox), which is why it's specific to tabs and not other UI.
i tried using other window manager: plonium, same issue with that too.