yes that's pretty much exactly what I'm seeing. Getting this also on the output step in grid view.
Strange thing is that I just had 1 project where this is not happening and I think I was able to reproduce the situation.
So when I load the photos and head to process step it's happening but when I go to output afterwards and back to process, it seems to work fine. But only when all photos fit on one page and no scrolling is necessary.
And just tested some more.
It looks like it has nothing to do with the steps, its just happening if the grid view needs to scroll. But when you get all photos on "one" page so no scrolling is necessary it works and even afterwards it seems to keep working.
So from my point of view look like a problem loading primary grid view with overflow of the first page.
Hoping to help you with the bug fixing and hoping for a quick release.