Fixes #2453. TextField OnEnter throws exception if IsInitialized is false.

[BDisp]

Fixes #2453 - Driver was accessed before IsInitialized is true.

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[tig]

Good catch.

What is the code path that led to you discovering this?

I'd argue that any code path that causes a view to be "used" before IsInitialized == true is buggy.

[BDisp]

What is the code path that led to you discovering this?

Was in the View.Add when the ComboBox is added and CanFocus is set to true.