Comment 3 for bug 1696381

-- To start typing again in the IDE, I need to switch to some other app ...
This is a known problem and you have the workaround. Every time I have this problem on my own, I wish everything to hell, but I did not find a solution until now.

-- Actually, now it looks something related to keyboard focus on Mac ...
Ok, then the given name cannot be found in the process list
(internally AppleScript is used:
set found to first item of (processes whose name is "#APP#")
where #APP# is replaced with the given string)
In the ActivityMonitor you can try to find out in the process details, which file is opened to start your app.
Or you might try with AppleScript on your own, to find out the name of your app process.