EDIT: Thanks for your reply! Initially I didn't think I've ever changed the DPI of my system, but on a second thought, I have Surface Book with a quite high resolution, so the Windows 10 might have a native scale option that increases the size of text, apps, and other items to 125%. Is this the issue related to the bug? If so, is this bug expected to be addressed in future releases? Thanks again!

Great to see WB drag extension.

I've set drag up for opening in background and drag down for opening in foreground. However, the tab always open in foreground even if I drag up. Is this a bug?

Also, the settings page is buggy, the settings will not stick from time to time.