I noticed this first when trying to reorganize my Gauntlet party, but I noticed it can happen in the Campaign too. When trying to reorganize my party, the companion/wolf selected will fly to the top of the page, making it hard or impossible to move them lower on the list. My mouse will be in the right location (in the image provided, my mouse was over the open space between the Icerun Enderling and Reed) but the selected wolf/companion will be visually way above my mouse. If this happens when I need to move someone lower on the selection, it tends to make that impossible at times.
My browser is Opera GX, on a PC