Thumbnails in hdr stacks change order randomly

I shoot real estate and use the group photos to HDR stacks in Bridge. This is to make it easier to organise the bracketed shots for culling.

I encounter a problem with Bridge when using filters (color/rating). 

When you first make Bridge group your shots to HDR stacks it displays the first bracket as the thumbnail. As soon as you do any kind of filtering, it randomly displays a new thumbnail from the stack. Not terrible bug, but annoying.

View attached video for the behaviour. 

I use Windows 11, Latest edition og Bridge.