We recently upgraded to standalone version 8.1.22.622.
Using the Edge browser, we can choose one of 7 stored procedures.
Using Internet Explorer, we cannot see or select any of these 7. In fact, it looks like well over half of the stored procedures are not selectable.
Why is the difference between the two browsers?
We prefer using IE because we don't have to download the designer link. I myself have not found an add-in that works correctly.
According to this post https://www.telerik.com/forums/sql-stored-procedure-not-recognized-as-datasource there is some issue with temp tables in stored procedures. But that post is from 2014.
If I open the older version of standalone in either Edge or Internet Explore then all stored procedures are selectable.