I have been using FEBE for a while now, yet with the following combination on Windows 10, if FEBE has a notification window display, it usually comes up with half of the window below the bottom edge of my monitor visible area. This happens with both error and warning messages. The attachment shows a typical output. It's hard to select an option to compolete without seeing hte buttons, and while these windows are displayed, I can't do anything else with my FF windows.
Windows 10 Professional