I have a custom SharePoint form built using Powerapps in landscape orientation (1185x790). The forms opens normally when opened from an item. However, when the form link is copied and opened using the link in a new tab, the bottom part cuts out. The form can scroll only as much on the page. Part of the form stays below the screen. It can be accessed by zooming out the page but not otherwise. Is there a way to have the form scaled to page height or some other way to resolve the issue?
Thank you for the idea. I couldn't get it to work for me so I ended up doing a custom size, 600 x 800, and changed it to a portrait orientation. This messed it up less than I thought it would. I rearranged the cards and finished it quicker than I expected. The size works perfect from a link to the form.