When running under Wayland, gnome-terminal gets the wrong size when maximized.  If you start a GNOME wayland session, open a terminal, and maximize it, there are a number of subtle bugs:

 1) On HiDPI displays, it may be too short by a pixel or two.  On my display (3200x1800), there is a 1 or 2 pixel line of background at the bottom of the screen.

 2) If you maximize and then add tabs, it will make the window taller so a portion of it is now below the bottom edge of the screen

 3) Some actions will cause the terminal to snap to an integer number of characters even though it's maximized.

I have no idea if any of these bugs are related so I'm only filing one at the moment.

Regarding (3).  Yes, there was some work to fix this and it is substantially better now than it was when I first installed off the fedora 23 live cd, but it's still subtly broken.  I'm not 100% sure how to reproduce it now.  I'll update the bug once it happens enough times that I can provide reasonable reproduction steps.