I have a reusable element. its basically a set of slides that goes though when a person presses a button. I have the height set to 300 pixels, but for some reason it grows each time I press the button (5 times total). But I have everything in a group, groups in groups.
The mistake you are making is NOT stacking the groups under each other with 0 px space between them. The groups should be stack underneath so you could see and edit them all at once in the editor (not picking one group, and then hiding it and picking another)
I think bartek had it right. I did fix this, and I think it needed to be fixed byu having the groups that were on top of each other be positioned with 0 space between them I don’t know why that should have worked, but I did get it corrected