What steps will reproduce the problem?

1. Main menu overlap.
   

2. Right action bars of different size.
   

What version of ShestakUI are you using? (Stating 'latest' is not useful)

wow classic 0.89
idk that is latest version.

Do you have an error log of what happened?

Any additional information? (example: WoW language if not English) (Attach screenshots here if available, do not link externally)

my wow client language is korean

I think cause of the problem is different menu count.

Menu button is fixed in e7f8376. Are you using auto ui scale by chance?

Any ideas on what might be causing the right action bar to be different in size?

Thanks!
I'm not using auto UI scale.

if UI scale is larger then Auto UI Scale, UI size will be different

Should be good now.