It's not the biggest deal in the world if the problem has been mentioned before or found by someone in the officially released version.
It's just a guideline that helps us seperate the two branches and what issues are specific to the beta/official build.
Don't be afraid to post what issues you've found here, but it's of course no use of posting things like "Lens Flares still look buggy" or "My joypad is still not working for me, and haven't since launch", basically things that are well known to be issues in the main branch .
Stuff like the wall-climbing glitch is possible in the main branch too, but it hasn't really been mentioned or found before testing the beta, so that's more like one of those edge cases I think.
Anyhow, it's better that you mention an issue (like the wall-climbing one mentioned) that you are unsure about than not mentioning it at all.
Pretty much exactly what I was thinking.