Massive memory leaks on Mac OS when in background

[yaksher]

Description

hello_world example has memory leaks (up to 50 gigabytes) when left in the background on Mac OS X

Repro steps

Run the hello world example in release mode, then leave it in the background

System Information

Computer information: Mac OS 11.5.2, 16 Inch MacBook Pro 2019, AMD Radeon Pro 5500M 4 GB
cargo version 1.53
imgui-wgpu v0.17.0
winit v0.24.0
wgpu-hal v0.10.7
wgpu v0.10.1
imgui v0.7.0
imgui-winit-support v0.7.1

[cwfitzgerald]

There's some issues with newer versions of MacOS not running garbage collection of resources while in the background. gfx-rs/wgpu#1783 is the upstream issue to this.

[yaksher]

The linked issue appears to be M1-only while the issue here is occurring even on my Intel CPU laptop.