Hi @justme
Thanks for posting back more details. That dataset should have the UCSC link out based on the datatype and database assignments. My test using hg38 instead of hg19 is also missing the UCSC link out, so the problem is likely server side.
The quick solution would be to move the data over to UseGalaxy.org or UseGalaxt.org.au until the functionality is repaired. Thanks for the followup!
Ping for EU support/admin @wm75 @gallardoalba + @dannon in case release related
Update: I decided to post this over to the EU chat. They make reply here or there, and feel free to join. You're invited to talk on Matrix