Memory leak on playing .mp4 video (media framework)

I’m using the 4.13 version of UE4 on OSX with 8 GB on RAM. I tried to embed the media framework using this tutorial Play a Video File in Unreal Engine | Unreal Engine 5.2 Documentation

It works perfectly. But when I pressed the stop button, my memory(available RAM memory) doesn’t increase at all. tried to play/stop back and fort only made my computer become so laggy and drained out the memory (until 100MB remaining). Closing down UE editor and Epic launcher will gave me back 4GB available memory. Is it because the memory leak? Is anyone out there experiencing the same issue on UE 4.13?

I just noticed you’re on OSX. For anyone looking, we fixed a similar issue for WmfMedia on Windows (CL# 3136661, and merged to GitHub Master in CL# 3149180; verified-fixed for Release 4.14).

I will forward your issue to the macOS programmer.