Incompatibility between First Admin Theme and GForm 2.5

I have been using the First Admin Theme plugin for a long time. It worked for ME very well. This week there was a GForm update and I ran into a bug. Basically when the First Admin Theme plugin is active the scroll bar to create the form with GForm disappears.

Check this video

I replicated this problem on other sites where I have the latest version of admin first theme installed