In this case, I moved a few text documents (originally created in the parent collection) into StackingView, and then added 2 more new documents inside of StackingView, and these were formatted differently with shorter wrappers, so the text was only half visible and required scrolling to read.
this should be fixed for new documents that you create this way in new stacking collections. existing stacking collections documents will have an issue.
In this case, I moved a few text documents (originally created in the parent collection) into StackingView, and then added 2 more new documents inside of StackingView, and these were formatted differently with shorter wrappers, so the text was only half visible and required scrolling to read.