Power manager "Low power" dialog responds to key events instantly = unintended actions triggered while typing

I have configure the power manager to ask for action if the battery level drops below X%. Thing is, it gets keyboard focus and responds to key events instantly. Thus, when the dialog is shown while I type in another app I repeatedly trigger actions unintentionally. E.g. it's extremely frustrating if unsaved work is trashed when I'm logged out of my session.

Is it possible to block keyboard input in the dialog for a few seconds so users have a chance to focus?

I'm using xfce-power-manager* 1.6.6-1