Pressing F currently has very little effect. It should provide a full screen view of the image in all it's glory without any distractions. Currently it just hides the menu bar which is completely pointless.
When was the last time you were affected by this lack of functionality, or specific tool?
Every day, so today.
Current workaround
Are you using any workarounds or other solutions to achieve your goals in Capture One?
The only workaround is to individually hide all panels so it's not worth the effort. Just curse and move on.