Brief Description:
1) Players who select "Beginner" option are ending up in games with players who selected "Intermediate" or "Expert" option.
2) Players who selected "Expert" option are not gaining or losing SMR points (+0/-0) because of the large range of SMR spread.
I know this happens, but I don't know if it's a bug. It may be a design flaw that either the spread was made too big or there isn't a minimum PSR you can gain/lose.