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    Default Problems with bufferedrenderer and Ext.tree.Panel

    I have been experiencing some strange behaviour with the 'Ext.tree.Panel' component when the 'bufferedrenderer' plugin is included.


    When scrolling within the view-port and opening a parent node, the dynamic injection of child nodes seems to fail some of the time.
    At my company, we experience a crash of the entire application when this happens, meaning that the user must reload the entire webpage to continue.

    It is important to note that this is just a problem with bufferedrenderer. However due to the large amounts of data we wish to display, when we disable this feature the tree becomes slow and prone to out of memory exceptions. Also, as far as I can tell, this problem is fixed with the latest version of the Sencha platform. The problem being that we cannot upgrade to that platform until our partner company releases their latest framework. This is an important issue for us to resolve and I was wondering if you had any hints on how to bypass this issue until we get the improved grids from the latest EXTJS version.

    Attached is a video showing how to reproduce this error. Take note that this is a lightweight example and does not happen as often as within our actual application.
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