I don't really want to add exceptions for specific plugins with such a small user base, but maybe we can get it to work without much effort. Perhaps it's just a small JS/CSS issue.
Problem 1:
After saving and clicking done (the tick mark), the admin menu remains in edit mode. I cleared my cache and refreshed and the admin menu went back to being usable.
Problem 2:
When Slate is active, Admin Menu Manager conflicts so that the last (bottom) item in the admin menu sidebar is hidden.
According to a report on the support forums there are some incompatibilities with the Slate Admin Theme.
I don't really want to add exceptions for specific plugins with such a small user base, but maybe we can get it to work without much effort. Perhaps it's just a small JS/CSS issue.
Problem 1:
Problem 2:
Without Admin Menu Manager:
After installing Admin Menu Manager (V1):