Steps to reproduce

1. Run GNU Screen (I'm running it in an OSX Terminal)
2. In the bubbletea repo, go run examples/fullscreen/main.go

Expected result: Screen is cleared and you only see the countdown message

Actual result: Your terminal prompt, history, and whatever else is still visible alongside the output of the program.

However, once the program exits, the contents of the terminal are cleared.

This bug does not happen in tmux or in a bare Terminal.

Screenshot

(I ran ls just before running the program, to illustrate how it writes over top of the existing terminal contents)