@BAS-Viet-Nam Okay, thank you for the hint. Worked on many sites with these 2 functions without any problems. So I will try it with "Wait while element exists" on this specific site.
Hopefully I don't get in an endless waiting-loop ;)
@Fox is there a way to make a custom notice like "Please wait for additional downloads" where currently there is just nothing after this window closes or after user hits start and it downloads node packages?
There is no functionality in BAS to change this window.