Recently, any key-combination I've got setup, has to be entered twice to show / hide an app.
For example for the first combination, I have to hold Command and click dot (.) twice. Same for the other one - I have to click W twice to get the combination to work (Whatsapp to show on screen).
Hey there. I get this too. I use BTT like @nadavl too. I have a few keyboard actions that take a combination of keystrokes and "show/hide and application".
Sometimes you have to click the combination twice to get it to work. But only sometimes. After you click twice that combination seems to work every time I run it. But then if I switch to a new combination (new action) the behaviour is random again (sometimes it works on first try, sometimes on second try)
I had this issue with 3.600 and 3.602 on macos Big sure.
I am now running 3.602 on Monterey on a 2018 MacBook bro 15'.
I also have Karabiner elements 13.5.0. I only have one override with Karabiner that doesn't affect the actions.
LMK if I can try out prereleases or anything to help you out with testing.