This bug has been driving me crazy for the last two years of using PowerApps. If you customize the field sizes of a Form and then rename the Form it will reset your field widths to snap to the default column size.
How to reproduce:
1. Create a new Canvas App
2. Add a new Form and choose a DataSource
3. In the Form settings, set the number of columns to 12
4. Change the width of one of the fields
5. Rename the Form
Expected Result
Renaming a form should not affect the layout of the form.
See the attached .GIF for the actual result.
Additional Details
If you do not set the number of columns then it will work correctly initially, but over time this bug happens to all forms even if you don't change the number of columns. You can also work around the bug by disabling the Snap to Columns option. Of course, reenabling the Snap to Columns will warn you that you are able to lose your customizations.
