EditView gets Redirected to NewForm (Bug?)

[Lephas]

I am struggling with a Powerapps Form with a Sharepoint List behind it. 

I have a Sharepoint List with 2 Fields that seem to cause this behaviour: (reloading when i Edit a List Item)

1)Attachment

2)Dropdown List with Radio Buttons

I have a separate Gallery that uses the Attachment Field as a source:

#Items:
Attachment_Field.Attachments

And i have a Field with the Dropdown Options. Since PowerApps doesnt recognize the Radio Buttons I had to remove the Dropdown Field and replaced it with the Radio Button Input:

#Items:
Choices([@'Sharepoint List'].'Dropdown_Field')
#Default:
ThisItem.'Dropdown_Field'.Value

Here comes the really weird part. When I remove the Gallery - my form works fine. 

When I remove the Radio Button Field or Replace it with the Dropdown Field Input it works fine.

How do I troubleshoot this? Does anyone know a workaround? 
This is driving me crazy so any help is highly appreciated!

[KajalGupta15]

Refresh your data source or create new tables and try to add controls again