Given your experience and that columbus never did that to me, I think I will pass on your debug builds, no offence :-) Anyhow, I am pressed for space and installing all of gdb, dev libs is unattractive.
BUT, I have 2 core-dumps from columbus under different usages, one streaming one not. So lets see if this helps at all. Details of file access sent via PM.
Setting up core dumps is simple: