There was a similar issue last year. It seems that has re-occured.
https://community.powerbi.com/t5/Issues/Bug-Trying-to-Publish-in-the-service-without-saving-the-file...
When I attempt to publish a report and have not signed into the Desktop yet, a command prompt box appears then disappears and Power BI crashes. Also, it seems that after the January 2018 update, Power BI requires to re-signin for each report created prior to installing the update. Normally after I have already signed in, Power BI will not request for another signin the next time I open the same report.
v-xiaoyan-msft
on:
"Sort by column" should work regardless of key col...