None of the key-combinations seem to be able to hide items and none of those keys are listed under keybinds in the Minecraft keybind menu either

it's completely borked... if you turn the mode on, every key press when hovering (toggling on/of function, left/right click, shift, ctrl) hides/unhide only that one hovered item

it would also be nice to have interaction with the cogwheel (like cheat mode - but SHIFT key for example), also there is no indication that the mode is ON (blue cogwheel background?)

Thanks for the report!
It should be working correctly in the latest version, I just fixed it very recently. Please try updating and if you still have issues, please paste your client log here.

Can confirm. Using 9.1.2.58 fixed the issue :) Thanks

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