I found out that on demo app: https://www.babylonjs-playground.com/#0XYMA9#6 sphere object disappears after few seconds without any reason. After another few seconds, some rectangular shape appears. This happen on my website with my custom scene with my custom objects and I thought that I have some error in my JS code, but after testing this on simplest demo on babylon playground I wonder if this error is caused by Chrome?
Phone: SM-G950F (Samsung S8), build: R16NW
Same demo on this phone, but on Firefox Browser is OK, sphere doesn’t disappear. Tested on Apple tablet iPad Air 2 and demo is OK.