Works for me - the RT picks up material changes without reapplying the materials; if you have a case where this does not work, please send me an example over to vlado@chaosgroup.com and we’ll try to correct this.
I also occasionally have material changes not updating, but it is not consistent. Also occasionally when having default lighting with GI on, there is no GI in RT and there are no shadows from the direct lighting. Very weird, since most of the time it works OK !
Hmmm, I’m testing the same scene this morning and it’s working properly. There definitely is a sporadic problem though because last night the “link” between the material editor and RT was totally gone. I’ll see if I can figure out the preconditions.