There seems to be an issue in the way history's depth works. I logged this for further revision and fix and updated your Telerik points in appreciation of the report. You can follow our progress on the matter in the Ideas & Feedback portal at History's Depth property is not respected
As to the memory allocation you mentioned, I can't seem to replicate such behavior. Would it be possible to send us exact steps that reproduce the issue and the image you are testing this with?
I'm looking forward to hearing from you.
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