Good news: I've now taken the 4.9.2 sources (was too busy for 4.9.1...), patched them with my collection of changes and recompiled the x64 version... now wildcard loading seems to work w/o that strange wait loop. I will do further tests but so far it looks good.
Did you change anything WRT this? And do you have any idea where that strange effect might have originated?
Thanks again for a great editor: small, fast and perfectly adaptable. Cheers!