Hi there,
I have created a pretty basic flow which deals with several approval scenarios based on authors/approvers. It's triggered manually from a SharePoint document library.
Basically it's an array variable which I append to with the emails of the authors taken from a 'get file properties' step. Authors and Approvers are multi value people pickers. In the Append to array variable step I select 'Authors Email' from the 'Get file properties':

The second I save or make a change - say to the name of the step - and press return it swaps the variable out for the Approvers Email variable:

I have tried rebuilding it and no difference. Nothing seems off in the list.. any ideas why this is happening?