Hi this is an old addon that I got used to and not maintained anymore but still working in the latest 5.3
Just recently I noticed an error on one of the operators called Shrink Ring and I did some AI corrections to it, just to that part. Seems to work for now.
If it’s of any interest I use it with modifier keys and scroll up/down for fast selection and it became quite addictive.
This all there is online about it: https://sourceforge.net/p/blendamajigs/wiki/Loopanar/
loopanar_fix.py (37.0 KB)