Hello Joseph,
Still having this problem and cannot seem to figure it out. PHP version is 5.5, we are using Avada theme which is usually compatible with anything as far as I know, permissions are all good. When you click to view the entry, to the right is a Move to Trash link which used to work fine. Since upgrading to Version 2.8.8 it no longer works. The only way to send an entry to trash is checking the box and clicking Move to Trash in the drop down.
I know this is kind of silly thing to worry about but the client wants to be able to move to trash while he is looking at an entry. Thanks for any help you can offer.
Cindy