Hi there, pretty easy bug to reproduce here. If you place a summarize tool down and click on the "Action" or "Output Field Name" header to sort the section, you will be greeted by an unhandled exception.
I noticed this error in a 2022.x.x version and it is still in the 2023.1.200 version.
Not a life-threatening bug at all but would still be a nice thing to resolve.