Problem with Mosaic Editing, Can't Erase/Clean regions/images

This has happened to me for some time now, I can’t clean up Orthos, in the mosaic editor I create regions and try to erase the images and the images stay there. I saw on youtube one person select the image and click the delete button on their keyboard and it erased the image. I can’t do that, and if I hit the delete button next to the region select tab, it just erases the full region. Need Help.

Would you please upload a video showing the problem? If you cannot upload the video, would you please contact us?

Kind regards,