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[BUG] Title Bar won't show when maximized #129
Description
Does an issue for this already exist?
- I have searched the existing issues
- I have ensured my environment (operating system, app launcher, etc) is up to date
Operating System and Version
Fedora 44
Launcher
RUM
Launcher Installation
Native
Other Install
No response
Wine Version
ElementalWarrior (Recommended)
Affinity Version
4351
Desktop Environment
COSMIC DE
Description
When windowed title decorations show up normally, but as soon as maximised the title bar and action buttons just disappear
Steps to reproduce
Install with wine
launch
maximize the window
Expected behaviour
the titlebar disappear
Screenshots
Logs
N/AConfig
No response
Self-service
- I'd be willing to fix this issue myself.
Activity
Gamedirection commentedon Aug 22, 2026
One correction to make sure we point you at the right fix: our existing notes on this speculated it might be the same KDE/KWin scaling bug we've confirmed elsewhere, but you're on COSMIC, which uses a completely different compositor (cosmic-comp, not KWin), so that specific cause almost certainly doesn't apply to your case. Fixed the wiki's wrong attribution too.
This looks more like a separate bug we've confirmed on KDE too: Affinity draws its own custom title bar and maximize logic, and that logic can compute the wrong window geometry independent of which compositor you're running. The workaround: instead of clicking Affinity's Maximize button, manually drag the window's border out to the screen edges once. After that, the maximize/restore toggle should keep the correct size for the rest of that session. Details: https://github.com/seapear/AffinityOnLinux/wiki/Install-Guide-Wine#affinitys-own-maximize-button-computes-an-undersized-window
Can you try that and confirm whether it resolves it for you? That'll help us figure out if this is really the same bug across compositors, or if COSMIC has its own separate issue we still need to look into.