RSS increases with every snapshot which is never released

Hi

node-webkit-agent version - 0.3.1
node version - 0.10.29

In my node process, I see an increase of 10-50 mb in RSS whenever I take a heapsnapshot. This memory is not released even when I stop the agent. If I try to delete the snapshot from frontend, then I get an "Profiler.removeProfile is not implemented" on the node output.

Is this expected behaviour ? If yes then is there a way to release this memory when I stop the agent because increases like this are very bad for long running node processes.