Illustrator 23: Crash when create new color swatch

There's a thread about fixing crashes

https://community.adobe.com/t5/illustrator-discussions/how-to-fix-a-crash-and-recover-documents-in-illustrator/td-p/11434061

Here's what I would try first.

If it's just this document that does it (it doesn't happen anywhere else?)

Then File>Save As and choose .AI and resave the file - see if the issue persists.

If it does - then try

https://helpx.adobe.com/ie/illustrator/using/setting-preferences.html

If all is failing then please try the first link I posted above with troubleshooting steps.