I get it crashing Sonar when changing (colour) theme but otherwise, it's good. I've also got Blue Cat's Rehead which is essentially the same but without the room emulation - the EQ curves are very similar but not identical.
That sounds like a TSA (Transitional Services Agreement) which is not uncommon if a company acquires another's IP. I work with these all the time and the Gibson/Bandlab one seems exceedingly good compared with others I've encountered. A TSA does not come with obligaions for the purchasing company though.
Don't some of the Intel CPUs with e-cores have reduced instruction sets for the e-cores (eg. less powerful SSE)? I have no idea what would happen if a plug-in that could use (and expected) these instructions got bounced to an e-core.