Hi Jim,
I was able to download the Problem_DB from your dropbox shared folder and check it out. I was able to verify that it shows funny on my Macbook Pro 16 as well as my M1 Macbook Air.
I created a database close to what your database is with my own dbpopup databases and it did not show the same issue.
I would like to try something else to see if we can determine if the databases that you use for the database popup fields may be causing the issue.
- Create a new database
- When creating the new database, do not include the dbpopup fields just yet.
- Sync the new database to the Macbook Air.
- On the Mac, check the edit/new record to see if the screen is good or not.
- If the edit/new screen is good
- On the iPhone, create one of the dbpopup fields and link it to one of the db's that you use
- Sync to the Macbook Air
- Check on the Macbook to see if the edit/new screen is good.
- If the edit/new screen looks good
- On the iPhone, make the other dbpopup field and link it to the other db
- Sync to the Macbook Air
- Check the edit/new screen to see if it is good
- If the screen is good
- On the Macbook Air
- Export the data from the old database to a .csv file
- Import the .csv file to the new database
- Check to see if the edit/new screen is still good
If you get through all this and the edit/new screen is good and not off to the left, I would delete the old database and rename the new one to the same name as the old one (or leave the name as is), and use the new database.
Please let us know what happens and when

PS - You said you have another database doing the same thing? Does it have the same dbpopup fields, or does it not have any dbpopup fields?
I am not sure if views might be causing the issue or not, but lets get through this part and if it is all good, then adding views one by one to see if there is a view combination that is a problem. It is possible that views might be causing an issue with the database, but views only affect list view of the records in the database.