Usermin New Messages button - Let me help

Operating system Ubuntu Linux 18.04.2
Usermin Version 1.751
Authentic theme version 19.21
Time on system Tue Jul 16 16:54:37 2019

Guys, we still have a problem with this issue here: https://github.com/authentic-theme/authentic-theme/issues/1260
I will help you to fix this once and for all.

1. Start with an empty mailbox.
2. Login to Usermin and confirm that you cannot compose new messages. Logout
3. Send an email to this mailbox.
4. Login to Usermin and confirm that you CAN compose new messages
5. Move the email from INBOX to TRASH and Logout.
6. Login to Usermin and confirm that you cannot compose new messages because INBOX is empty.
7. Click on the TRASH folder and confirm that you CAN compose new messages
8. Click on the INBOX folder and confirm that you CAN compose new messages - even though it is empty!!!

Analysis:
Your logic has a flag somewhere which is switched on within a Usermin session, IF it recognizes at least one email message in some folder.
Can you please switch on this flag by default?