[Users] Clawsker doesn't start (Can't locate Gtk3.pm in @INC...)

[Removed GDPR]

I have just cloned from git latest source and built
clawsker and it happened again: trying to start the
program complained about Gtk3.pm although it was
installed previously as discussed:

https://susepaste.org/a57b45c6

As seen in the paste, after re-running the 2 cpanm
commands the program starts.

Do I have to redo this after each build?

--
George