ArcGIS Pro consistently fails to shutdown without crashing. Prior version had same issue - I performed a clean install and updated all available patches (as of June 2019). Shutdown not responding error appears momentarily in upper-left of GUI, then a message that ArcGIS is checking for the cause then a software crash. Any advice on how to troubleshoot? Where to look to find out more?
I would review this post and the comments from Kory Kramer - https://community.esri.com/thread/241778-pro-says-it-crashed-when-closing
It would also be advised to open a support case with technical support to have an analyst review the issues.
Did this behavior start after a system update or out of the blue?
I'm going to close this post, after I review Kory's case. It appears to be associated with a database that is shared by two projects only. That may be out of the functional scope of the application.