Strange issue while mouse wheel over locked column in Kendo Angular grid

[Pavlo]

Hi!

So could you maybe help with such problem. I tested same thing on demo on official website and it works fine:

event is WheelEvent here, which is good. However, when I do same thing in my application (try to scroll over locked column), I get an error because event is undefined in the exact same place:

 

Do you maybe know or have suggestions what could be the cause? Thank you!

 

Here is not compressed version. Shouldn't it be args.preventDefault() instead of "event"?

[Pavlo]

Shouldn't it be "t.preventDefault()" instead of "event.preventDefault()"?

[Pavlo]

Updated question with not compressed version.