This entry: hidden link has a blank end date and the view hidden link has conditional logic to hide the end date if it is blank [wpv-conditional if="( $(end-date) ne '' ))"]–[types field="end-date" style='text' format='M j'][/types][/wpv-conditional]
This has been working in the past but it look like there is now a space or a value creating a space being added to the blank end date field so that when that event is published on the front end: hidden link it shows as Jan 25- , 2022
I visited hidden link and I can't see where it shows the date as you describe.
I visited the post in the back end, where I see that the end date is blank, but can also see (in the Custom Fields metabox at the bottom of the page, which has the raw database values for the custom fields) that there is no content, no space character or similar, the field really is empty.
The post referenced is currently saved as a draft: hidden link and that is why you don't see on the workshop page. If you temporarily publish that post you will see the issue on the hidden link page. Please move the post back to draft status after you are done.
The conditional logic that is only supposed to show the date dash is in this view: hidden link
I checked with debug mode on and it was providing a value for the end date, even when the post didn't appear to have one.
I re-inserted the conditional shortcode (using the conditional output button) to check it was formatted correctly, and it applied the wpcf- prefix used by Types fields.
Saving the View and checking on the front end it appears to be working correctly.