@Pyrephox said in GMs: Typical Player/GM Bad Habits:
No-selling character skills and abilities. I don't want or expect a single PC ability to be an instant win button on any scenario, but the times when GMs have shut down or bent over backwards to decide a character's extremely relevant skills/abilities Just Don't Work because they didn't think about them when building the challenge is kinda silly.
OMG this is so frustrating. My current TT GM does this. Like 5e, rolling above 15 is supposed to be good for many things, but he constantly only gives good info for spots or history checks with 20+. Ugh.