Running commands asynchronously with asyncio.subprocess breaks Ghostty

[hankertrix]

After running multiple long-running commands asynchronously with Python's asyncio.subprocess, Ghostty no longer displays anything that is typed to the terminal.

Below is the file with the script, it requires python, ffmpeg and agg to be present on your PATH.

reproduction.zip

Changing the script to output to the null output still results in the same issue, while changing the script to run synchronously does not cause any issues with Ghostty.