User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0
Steps to reproduce:
With WebRender enabled, load any page with a canvas rendering frames, for example :
I'm using Nightly with an NVIDIA GTX 970, 430.86 driver, Windows 10 1903.
The system Commit charge and Physical memory (until Windows memory compression is triggered) increase continuously.
The dedicated GPU memory on the GPU process seems to follow the same increase (but it periodically decreases as the dedicated memory is limited), and its handle count increases.
Switching to another tab pauses the leak.
Closing the tab doesn't free the memory, but killing the GPU process does.