Hi @nowackem
The issue looks to be reproducible when tested with a sample form at our end. With our sample form the issue is only seen on the first page of form but not on subsequent pages when only the text-fields used and they flows from one page to another. In our sample form we made each sub-form as flowable from top to bottom and all fields have page break and layout settings set as expand to height. The current scenario looks to be a buggy behavior so recommending you open a support request to get this corrected.
In your shared form all sub-forms are set to be flowable but in western text style. The individual field can expand to height but till the sub-form stays in the first page the issue happens. Also the behavior is shown when other fields are used in combination with text fields like Date field, Date Time field, signature field and others.