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There is currently no growing file support for mov container, when working in Adobe Premiere Pro. When importing a growing mov file into Premiere Pro the duration of the file will be five seconds and the file itself will be displayed as growing (=cursive), although the file will not grow in the timeline or the Project Window of Premiere Pro. When the file gets closed (=stop recording), then it will get the correct duration automatically in the Project Window without any interaction of the user. Growing file support with mxf containers is still there and work works the same way as it did with previous versions. Growing mov files can still be used with Apple Final Cut Pro X.
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With v4.0 we changed the naming of the User Interface from "Just In.app" to "Just Control.app". Therefore please be careful when updating and to please delete the Just In.app from your Applications folder.