Vertical resizing doesn't redraw properly #3207
Description
Environment
Windows build number: 10.0.18990.0
Windows Terminal version (if applicable): After 1909 release, built from master, latest commit: https://github.com/microsoft/terminal/commit/df26c677efcb815a3b66a974345c9d3483cab678
Any other software?
Steps to reproduce
Resize the Terminal from the bottom or double click to make it full screen. Any vertical resizing will do it.
Expected behavior
Everything draws properly and the background color fills the window.
Actual behavior
The background doesn't fill and black rectangles fill it instead. Improper redrawing.
Metadata
Metadata
Assignees
Labels
Interacting with the vintage console window (as opposed to driving via API or hooks)Issues pertaining to the user interface of the Console or TerminalIt either shouldn't be doing this or needs an investigation.Doesn't match tag requirementsThe new Windows Terminal.Fix is checked in, but it might be 3-4 weeks until a release.