Description of problem: Every time a terminal is docked (expanded, snapped, however you want to describe this) to a side of the screen, and returned to its 'undocked' size, the number of columns and rows displayed in the undocked state decreases.
Version-Release number of selected component (if applicable):
Tested with GNOME Terminal 3.30.2 on a fully updated Fedora 29 desktop with two monitors, the same version on a laptop, and GNOME Terminal 3.31.90 on a laptop running fully updated Fedora 30 Candidate Beta 1.8.
How reproducible: Every time.
Steps to Reproduce:
1. Open GNOME Terminal
2. Dock the terminal to the side of the screen <Super>-<Right Arrow>
3. Return the terminal to its original size <Super>-<Down Arrow>
4. Repeat steps 2 and 3 as many times as desired, issue will become obvious. The displayed size eventually bottoms out as the size of the prompt.
Actual results: Each repetition of steps 2 and 3 reduces the number of columns and rows displayed in the undocked state from the previous iteration.
Expected results: The number of columns and rows displayed in the undocked state should remain constant.
Additional info: Making the terminal full screen and returning it to its original size (<Super>-<Up Arrow>, <Super>-<Down Arrow>) does not exhibit the behavior.