Use the attached project and try to collapse the panel:
Workaround:
this.radCollapsiblePanel1.EnableAnimation = false;
Hi, Dickson,
We have introduced some improvements related to RadFilterView which is the possible suspect for this undesired behavior. Note that we will definitely consider this when addressing the item.
Meanwhile, feel free to disable the animation for RadCollapsiblePanel.
Regards,
Dess | Tech Support Engineer, Principal
Progress Telerik
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