Memory leak in Atlas actor view

[Doménique]

When looking at any entity in the Atlas actor view, the amount of memory allocated keeps growing. This growth accelerates when the view is altered by zooming in or out, or rotating the entity. This only happens in the actor view, the regular map view shows no such behaviour. So returning to the normal view pauses the problem, because going back to the actor view will let the memory usage continue to rise. If let unchecked, my system runs out of memory and will try to create a swap file to keep up with memory demands.

I captured a brief video of the memory statistics in actor view: ​https://www.dropbox.com/s/lkl2vibsleq9tf9/actor-view-memory-leak.mp4?dl=0 It appears the actor view rendering mode allocates a lot of memory on frame drawing, which isn't released afterwards.

This is not a new issue, it has been there for as long as I can remember (I'm currently on 10.9 Mavericks, but on 10.6 Snow Leopard the same happened). Perhaps it only manifests itself on a Mac, because I couldn't find any related ticket. It is not a major issue if Atlas is restarted every few minutes when modding actors.

[Stan]

Duplicate of #2735 Gonna change the Inexplicit title of mine =)