Jagex confirmed on a thread on the RS forums awhile ago (that they deleted btw) that the stats being reset is NOT a bug and that it was intentional and it is related to botting.
I say never bot on that account again.
Jagex saying that it is a bug is a lie. Here is why they tell you to open a bug report for it:
You confirm on the forums or to a J Mod/P Mod that you got a stat reset - they tell you to make a bug report - you open the bug report and confirm that you got the stat reset - they then take extra measures to look into your account to see if you are botting - if you continued to bot after the reset, then 99% chance of ban if you use Powerbot or Nexus bots.
So in a nutshell
1. Jagex lies about resetting levels and tells you to report a 'bug'
2. You report the 'bug'
3. Jagex follows your account to check for botting
4. ???
5. BANNED!

