[Pharo-project] Weird red crossed rectangle with Spec on Refactoring ... accessors

In #20571... Windows PharoVM I tried to do a Refactor .. accessors. then I got the spec related message with model: ... as reported before. Ben told me that it was something with WidgetBuilt class missing. All right, WidgetBuilt thing needed in the image for Spec (don't know why it isn't there but still, I only do system updates). Now, I went to Monticello, and saw Spec from Markus.88 which I browsed and it contained the WidgetBuilt. So, I merged it. And now, the feature works, but instead of having checkboxes for my accessor methods, I do get a red cross with nothing selectable. Is anyone having the same behavior in the image? Phil