Hi,
Interesting that the in KB3115181, it says “Schema management UI doesn’t list crawled or managed properties.” while the actual issue is that PowerShell is not showing crawled properties (https://social.technet.microsoft.com/Forums/en-US/749301b1-c798-4d39-8cf0-5698603c1d26/crawled-properties-not-shown-via-powershell?forum=SP2016), while UI is showing them just fine. Let’s see if it still fixes the actual issue.
Another thing, any idea what “upgrade” means in same KB: “Note Upgrade of Search Service Application […] required for the fix to take effect.”?
Thanks!