As most know, ACL is in a very bad shape.
In the last weeks, Roland did a lot to solve these issues.
To complete his work, we need urgent tests on this extensive PR by André:
https://github.com/joomla/joomla-cms/pull/10793
According to my tests, that should be a release blocker until merged.
It would be a pity to release 3.6.0 with broken ACL…
Thanks for your attention.
JM