We installed Adaptable back when we did an update to moodle 3.1 and then we divorced it from your repo and customized it ourselves to fix bugs that we found.
Today I've installed moodle 3.5 on a development server and your latest version of Adaptable to see what is different and see if any of the bugs we fixed got fixed by you (we never reported them to you). I loaded some of our Adaptable theme settings for colors etc, but otherwise didn't change anything in the theme.
I want to report some of the bugs that we had to fix a couple of years ago that appear to still be present.
1. There are misalignments of the grabber icon and the edit menu link in the course section header when editing is turned on and a white space on the right for hidden courses.
2. The padding for course section edit menus has too little padding on the right.
3. On the gradebook setup page the dropdown menus have way too much wrapping. This looks a lot better when the icon and the text are all on one line without wrapping. (Also, wow, such big icons now. I don't know if that was your decision or moodle's.)
4. The bottom-most grade book setup page edit menu gets cut off in the container which holds the table. You can scroll to reveal it but our instructors have trouble figuring things like that out. It's better usability if the whole menu is displayed.
5. This is a new one. The side menu appears in the left column. I forget if we modified this (we probably did) but the gradebook page is so hard to use already, taking up space with a menu at all is a bad idea, and putting what is usually on the right on the left is confusing.
6. Probably related to other menus having too little padding on the right, the main menu arrow is all the way to the right. It looks better if there's equal padding as on the left.
7. In the custom header menus, Top Menu1 for us has the title "UCSB" but the theme shows "Links menu" and when you click on it you get an awful overlay effect. This is probably caused by moodle 3.5.
If I find any more like this, I'll report them.