BUG - Closed Subpanels - Do not load after Editing and Saving

SugarCRM Professional

(version 7.6.2.1)

Stack: Windows 2012/IIS/

This appears to be on any modules; but take Account Module as an example.

1. Edit an Account

2. Close all subpanels.

3. Exit Account and return back into the account making sure that all subpanels are in fact closed.

4. If they are closed, EDIT the account, make a change and save it.

5. Try to open a subpanel. You will see that it justs says Loading.. and no data ever gets loaded.

I tried it on a fresh instance and it does the same thing. Is this a bug? Can someone try it on their stack?