Resize causes memory leak on iPhone 11 Pro, OS 14.1


Found this bug and the reason seems a bit hard to find:
If you open Cesium Sandcastle on an iPhone and start resizing the canvas using the widget handle, eventually browser reaches almost 2GB of memory allocation and crashes.

Why this is relevant: Rotating the phone portrait / landscape orientations make all Cesium fullscreen apps crash very fast even with only showing the basemap globe.

I made a sandcastle for reproducing this:

It took 3600 iterations (runtime maybe ~30 seconds) on my iPhone to crash, and the result looks this way:

Update: We cannot reproduce this on Android or Windows Chrome. Seems to be iOS related somehow.

Update: I can now confirm that iOS 14.3 update fixed this issue! This was propably a chromium webgl-bug.