I have the same issue.
View attachment 618619
But I think the problem is caused by the mis-aligned lift gate the SC claimed it's "within spec"
View attachment 618620
The left side gap is much wider than the right side.
View attachment 618617
Since the lift gate is mis-aligned, the lift gate inner trim piece is rubbing against the rubber seal on the right side and pull it apart when the lift gate is opened.