Environment

Windows build number: Microsoft Windows [Version 10.0.18363.657]
Windows Terminal version (if applicable): 0.9.433.0

Steps to reproduce

1. Open Windows Terminal with any config CMD/Powershell/Ubuntu
2. Fill all visible window with some longline text - ex:. ls, dir, cat smth
   
3. Split horizontal
   
4. Focus to the first pane.
5. Output smth short - ex.: ps
   
6. View artefacts!