Old issue still on 2.5.1 (1.16.4):
https://paste.gg/p/anonymous/b52044f4e28d40c29da4414dc71098b9

: Automatic Recording is OFF

• Join the server
• Start recording
• Stop recording
• Leave the server

It's not reproducible 100% of times unfortunately. I catched it once and then every time nothing bad happened. After crash occured, the temporary folder left being empty.

Looks like I got it. This happens on Windows, when the you leave the server when temporary folder is opened in explorer. So it's not really an issue on your side, but I think the exception could be catched and ignored in this case.