I experience white bars around canvas on iphone 12 (iOS 14.7.1 ). Chrome 93.0.4577.39. On the left and right, as if aspect ratio was fixed for 16:9.
Using Babylon Toolkit 4.0 to export to Babylon.
Fast help appreciated, would like to avoid Babylon upgrade (final stage of aproject after 1 year delay from the client side; well, what could go wrong).