After selecting the Touch ID under Settings - Security - Quick Unlock it only stays for the next time Enpass times out.

Unfortunately, I'm been spending quite a bit of time in the application on my MacBook Pro and the turning off of the Quick Unlock/Touch ID is forcing me to have to enter my Master Password over and over again when Enpass locks.

Note - this is happening without logging off or shutting down the computer. (I would expect to have to re-enter the Master Password after a log off or shut down.)

Its there a way that I can select it so that Quick Unlock/Touch ID remains active?

I have the same problem.

I can confirm this behavior. Touch ID can be used on time only, then I need to enable it again in prefs. 

Enpass v. 6.3.2 (582) on Catalina 10.15.1.

I've the same behaviour with Enpass 6.3.2 and Cataline 10.15.2. Very annoying, I just buyed pro because of TouchId. 

Same issue. Enpass 6.3.2 (593) on Windows 10.

Same issue. Enpass 6.3.2 (593) on Windows 10.

I wrote to 'enpass team' explaining the issue and the answer was the follow: We are already aware of this issue and our Dev team is working on it. Hopefully, fix will be available soon.

I think we just have to wait

Well done Development Team!!!
The 'Touch ID' problem has been resolved with the latest update to the app.
WAHOO!!
Thank you very much!!!