I just updated the Babylon js code on some activities built on older versions of Babylon js and I am working through the issues.
I found that my code was looking in Local Storage for the properties: position, scaling, rotation and cameras as just .x .y .z but they are now stored as ._x ._y. _z . I updated for this and it all seems to work.
Is it just in Local Storage that the x,y,z properties are given underscores? Seems like it