We have reproduced similar misbehavior, so I do not think that this is an issue in your app. Does your app use transitions? During our tests, we discovered that this occurs only when transitions are present.
Unfortunately, the issue in question is quite complex to fix - we are looking into addressing it for our next major release. The complexity is due to the fact that the transition should be canceled mid-time. Apart from visual handling, this also has some application state implications.
Please let me know if this is the same problem - it might be something else that you experience.
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