Hi @ShaneITAutomate ,
Do you mean that the PaddingTop property within the ComboBox could not work in Display form or Edit form in View mode?
Based on the issue that you mentioned, I have made a test, and the issue is confirmed on my side. Actually, it is an known issue with "Padding" property of the ComboBox control -- The Padding property of the ComboBox would not work when the ComboBox is inside a Display form or Edit form in View mode.
If you would like this feature to be improved in PowerApps, please submit an idea to PowerApps Ideas Forum:
https://powerusers.microsoft.com/t5/Power-Apps-Ideas/idb-p/PowerAppsIdeas
As an alternative solution, you could consider unlock the "Registration State" field data card in your Display form, then hidden the DataCardValue3_1 (ComboBox) through the following formula:
Set the Visible property of the DataCardValue3_1 to following:
false
then add a Label control inside your "Registration State" field data card, set the Text property to following:
ThisItem.'Registration State'.Value
If you enable "Allow Multiple Selections" for your "Registration State" field in your SP List, please try the following formula:
Concat(ThisItem.'Registration State', Value & ", ")
After that, you could change the Padding property of the new inserted Label in your Display form as below:

Please consider take a try with above solution, then check if the alternative solution could help in your scenario.
Best regards,