Ian Bellomy
Ian Bellomy
Hrm. Yes. Safari 15.0 FWIW. 
Looking for more details in Safari release notes, but looks like Salesforce has a known issue entry related to Safari 15 now blocking cross-origin dialogs (including 'prompt'): https://trailblazer.salesforce.com/issues_view?id=a1p4V000000oYNZQA2
Huh. In 15 and 15.4 (TP) I'm getting a very explicit error in the console.
Roger. I may have a chance to look into this in the next month.
I did not have a chance to look into this. I may get a chance to look at into this someday...