Before update I have read that it is safe to update, because no changes from template side is needed. But after update from 2.0.22a to 2.0.22b some times I got layout problems - page menu load in is some messy way (like CSS problem or something).
Could it be, that some firx from template provider is needed ?
There were no layout changes. Maybe a Joomla or browser cache issue.
Some how it affected template. I found other users complaining in my template provider forum about same issue after update.
https://www.gavick.com/forums/140/vm-2-0-22b-submenu-problem-28325.html
It is a problem with a Gavick override then.