Just wondering about stencyl limitations

Hi,
Theres a game i play called Legends of Idleon, its made using stencyl and it has an annoying bug where the game goes completely white and doesnt receive input.

It seems like its probably a memory leak or something which is usually programmer error, but the dev has said its a limitation of stencyl, is this true or just passing of the blame?

I've never ran into anything like that. I've pushed the engine pretty far, too.