Subtle changes, bugs and feedback

what? No I didn't.

Audit log disagrees.

Did you really not?

It's a drop-down on the right-hand side and the process is fairly explicit:

1. Choose "Close" and submit.
   
2. New page loads asking you to confirm by submitting a form, hit submit.
   
   

So it's a two-step "Are you sure?" process, and it definitely used your credentials to close it.