To reproduce the bug (Mac OS Big Sur 11.6.1, but also happened on Catalina): 1. Load Slack 2. Use Microsoft Remote Desktop by remoting into another machine. Make sure "Clipboard" is enabled. ...
Thanks Nexarian. I wasn't able to find any option to disable the clipboard in Microsoft Remote Desktop. I unchecked the copy-paste option (maybe that's what you meant), but unfortunately, that's had no effect on the instability - both apps crashed again today.