See https://github.com/kiegroup/kie-wb-common/pull/724

kgaevski@redhat.com has reported OOME when dragging shapes around in the CM editor.

I have been unable to replicate; but do notice a noticeable slow-down in the editor as shapes are continually dragged around. I suspect this manifests itself as an OOME in other environments; perhaps I'm just lucky that my environment is just able to fill the heap and GC before OOME occurs.