Powerapps form data cards positions reset suddenly

[adrian_piller]

Hi,

I have created multiple screens in Powerapps containing a Form with it's data cards. All the data cards were arranged accordingly using columns and the app was published (screenshot 1). Now one day later the data cards of some screens are suddenly all overlapping (screenshot 2), nothing was changed in the meantime. I am also not able to open the "fields" dialogue on the right in the form properties to add fields to the form. I also can't properly select the data cards on the left in the structure view.

Is this a general Powerapps issue going on or were all the position values of the data cards reset somehow?