SliderPanel fails to open/close

[cradoi]

I've created a view which contains multiple charts (Vaadin "Chart" components) in it that update once every second (a new point is added in each chart). Into the same view, I have a "SliderPanel" component which sometimes fails to expand/collapse. I believe there is an animation issue that appears when the slider is expanding at the same time a point is being added into the chart.

The same issue can be reproduced much easier using the "SliderPanel" online demo when you try to quickly expand multiple sliders: http://non-rocket-science.jelastic.servint.net/vaadin-sliderpanel/

Steps to reproduce:

1. Click on "Left slow Slider (flow in Content)";
2. Immediately click on another Slider (doesn't matter which one) - "First Top Slider";
3. Issue: one of the two sliders will fail to expand or collapse.

Thank you, Codrut