I am running Mac OS 10.14.4 on a 2018 MacBook Pro and Enpass 6.0.7.
I frequently work connected to an external monitor. When I disconnect from the monitor and use my laptop on it's own, I often find that the graphics for the Enpass password window (accessible by right-clicking in a web form field and selecting "Enpass") is corrupted. Quitting and restarting the application will fix this. But the next time I then connect, or disconnect, essentially changing my video setup, the dialog will usually (80%) be corrupted again. This happened after the last update. I've attached a picture of the dialog as it appears, in this case, I would need to enter my password to continue, and the dialog is corrupted.