I have created a section with a text input field and OOTB Rich Text Editor field, and in run time i have entered data for both the fieds and submitted.
In Review mode, the data enetered in rich text editor is not aligned properly with other fields.
There is more space between label and the field value for rich text editor.
It is very much possible that after the upgrade, issue related to the skin can come up because in 8.x version we have added/modified existing CSS in some scenarios and there could also be custom CSS which may have resulted in this.
So, looking at the screenshot, I would suggest adding padding-top/margin-top to the input field. This should surely resolve the misalignment.