generative expand: "To use this feature, first drag the canvas to expand."

I am seeing this error in Photoshop Beta 26.6.0 beta that I just updated.

Seems to work ok in the non-beta 26.5.0 release.

I have straightened my keystoning using camera raw filter and geometry. That has left some of the canvas unfilled. Generative expand refuses to fix this. I can at least get past the dreaded "first drag the canvas to expand" message if I expand the canvas more, but even then it expands one side, but leaves the other unfilled. It sure seems to be a bug.

I get this problem if I try to resize a locked bottom layer. Unlock it and add a new transparent layer beneath it.

I have run into the same problem and it seem to be quite random. But I think I have figured out what causes it. When I enter a custom height and width into the tool preset bar, I get the error message. If I choose one of Adobe's presets from the drop down, it works fine. But when i entere my own width and height, i get the error. Seems like a bug to me. 

So, I have accidentally discovered how to make it work again! Just to reitirate the background, until the release a couple of weeks ago I had to expand the canvas using the crop tool, hit return and PS would generate the new content. Then it suddenly stopped working. I would expand, hit return, and get blank canvas added. Click on the Generatve Expand and get the message above. 
Yesterday the message made sense! They mean to say "expand the canvas, and then click on generate instead of hitting CR!". I did that and we were back in business!

I think the new method makes more sense since I need to expand the canvas without Generate AI sometimes and the auto generate on CR was a waste (I would hit cancel). Now I can choose to use the generate feature or do an old-fashioned canvas expansion as needed.

In conclusion, the feature works beautiifully but the error message above could be a little more descriptive as in "To use this feature, first drag the canvas to expand, and then click on Generatve Expand."

I have been using this feqature for months and now suddenly I am getting this message. I terminated PS and restarted it, updated it to the latest, even tried using the beta versio, no luck. Is this feature disabled suddenly? What happened? How come there are no responses from PS on this? Odd.

Yup. We're now well into April and still, no fix for this bug. Furthermore, Generative Expand now no longer works in Photoshop Beta, NOR the the most recently updated Photoshop (mine is always up to date). How are we supposed to use this new 'feature' when it doesn't function any longer and hasn't for weeks/months?! UNACCEPTABLE.