Hotkeys often stop working after the first time they work.

Even if I restart the skhd service, the hotkey works the first time, but not since. It sometimes works again, but I don't know why sometimes it works and sometimes it doesn't. How do I fix this?

Start by reproducing the hotkey failure after restarting the skhd service, recording when the shortcut works and when it stops. Investigate the daemon's handling of repeated hotkey invocations; done means the reported hotkey continues working after its first successful use.

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