I’ve discovered what appears to be a bug with Cubase 11.0.41. I don’t know if the issue happens with 11.0.40 or 11.0.30 since I went straight from 11.0.20 to the latest, but I can at least confirm it doesn’t happen with 11.0.20.
To recreate, simply load either the Pulsar Audio Smasher or the 1178 on an audio track, close the plugin window, and then hit bypass on the plugin from either the mixconsole or the inspector. If an admin wants, I can give the crash log this generates.