I have had a nuisance with this feature because I use ALT + TAB combination a lot to switch windows. While I have Enpass focused and it is unlocked using this combination keys, the program reveals the password. Imagine if I have someone behind me looking at my monitor and Enpass reveals my password because I pressed a simple ALT+TAB combination. Is there a way to disable this feature?
I have the same problem with Enpass running on Archlinux with XFCE. A workaround that worked for me was placing Enpass application on another workspace. I've put a workspace switcher in the panel to select one with mouse or using CTRL + ALT + left/right arrow to switch between them.