[CLOSED] Uncaught TypeError: Cannot read property 'isSynchronized' of undefined

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    [CLOSED] Uncaught TypeError: Cannot read property 'isSynchronized' of undefined

    Sometimes, I'm getting this error when try to expand RowExpander.
    It works many times before the error happens.

    This is the stack:
    Uncaught TypeError: Cannot read property 'isSynchronized' of undefined
    at F.removeCls (ext.axd:19)
    at F.destroy (ext.axd:19)
    at F.destroy (ext.axd:19)
    at F.destroy (ext.axd:19)
    at Object.destroy (ext.axd:19)
    at F.beforeDestroy (ext.axd:19)
    at F.callParent (ext.axd:19)
    at F.beforeDestroy (ext.axd:404)
    at F.callParent (ext.axd:19)
    at F.beforeDestroy (ext.axd:1274)
    Last edited by fabricio.murta; Sep 22, 2017 at 10:09 PM. Reason: no feedback from the user in 7+ days

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