strange rendering on an iPad Pro generation3

[jmburnod]

Hi All
I got a strange rendering of my app on an iPad Pro ( generation 3).
My app is 1024 X 768 and I could see my dev tools on right.
I solved this issue to set "agrandir" (zoom in english) to true in reglages pane of the iPad
Is there a way to avoid this ? (I don't use fullscreen or fullscreenmode)
Best regards
Jean-Marc