If you're talking about Canvas+, that has been officially unsupported for some time now, because it's incompatible with so many features it basically never works. So if you try to use it you are on your own and should not have any expectation of it working correctly. The Cordova exports which are based on real browser engines are the officially supported export options for mobile, and as far as I am aware, they are working fine for the vast majority of users.