access denied editing a new site using Chrome
I'm struggling with the same problem. Sometimes i get "Access denied" message and sometimes i get redirected to login page. It only occurs when using Chrome, first my client's site was on version 5.5.0 then i upgraded to 126.96.36.199, but the problem still exists. Seems like Chrome version doesn't matter either.
My solution: I refresh the page (F5) and my block then appears as it should.
Weird, slightly annoying sure, but noticed that it happened more recently I think after upgrading FireFox.
I the case mentioned here it might be a bit different, the Access Denied problem happens sometimes due to a delay in server response, from my experience, so only way out is a good CTRL+F5