transition css broken in beta 28 -- zeros parsed as false

I’m not really sure how to create a plunkr for this… but when i roll back to beta 27 the issue is not there.

I can tell you that this create function:

    contentShift: {
      transition: theme.transitions.create('margin', {
        easing: theme.transitions.easing.easeOut,
        duration: theme.transitions.duration.enteringScreen,
      }),
    }

will return valid looking transition css: margin 225ms cubic-bezier(0.0, 0, 0.2, 1) 0ms

however inspecting the target css shows messed up transition css:

.App-contentShift-15 {
    transition: margin 225ms cubic-bezier(0.0, false, false.2, false) 0ms;
}

[RafaelHovhannisyan]

CSS Transitions are broken on Inputs.

When this will be fixed? In next release ?

[verekia]

An example of broken components is the label and colored bars of TextFields which lost their transitions.