Debian 11
KSP 1.10.1+BG

Replicate by loading tutorial SubOrbitalFlight.py using procedural SRBs instead of stock SRBs on the rocket and script will not be informed when SRB fuel has run out. I realize this may be a PPart issue but figured I'd put this here in addition to reporting in the PPart forum and let sharper minds sort it out. This entry will also serve let others encountering the issue know that the issue has been noted

Sorry for taking so long to getting around to this...

I presume you mean the procedural SRBs from the "Procedural Parts" mod?

What does the "+BG" mean in your KSP version? Is that another mod as well?