AI generation not updating display

In 27.12, when using ai generative fill, or remove - the usual 3 variations are created.  However, the cursor flashes between working and ready - and the image will not update when chosing between them - unless you minimise the Properties window which displays the variations.  So, you have to select a variation, then minimise the panel and the main image will change to show the variation, if you try to do this as it used to be - it just wont update.  AI tools are also very much slower than they used to be