Thanks for posting this. We'll definitely take a look. You can bugs here in the future and if you have source that reproduces the issue then that would be very helpful for us to have.
It does look like one of our engineers posted back to you on opengl.org a couple of weeks ago. Unfortunately, our QA cycle is quite long and it can sometimes take a couple of months to get a fix into a regular Catalyst release. I'll check with the engineer on the fixes and figure out which Catalyst will resolve the issues.
**update** the texStorage issue is still unresolved on 12.4