Cesium is crashing in mobile safari (iOS 9)


I was porting existing Cesium application to Cordova(iOS) and was experiencing crashes on model loading. I started investigating this, and found out that Cesium crashes in Safari even with simple demos.

Steps to reproduce;
1. Open Cesium viewer
2. Rotate, zoom in and out for a while
3. Experience a crash ("A problem occurred with this web page, so it was reloaded")

Example video: https://youtu.be/ln3AywgiwJI
Crash log: http://pastebin.com/pETzS2Ag

Tested devices: iOS simulator, iPad Pro 9.7, both iOS 9.3.1 (I can try more devices if needed)

My feel is that Safari crashes because of out-of-memory, but I have no idea how can I decrease memory usage for my app if simple viewer crashes.

Thanks in advance!

Best regards,
Aleksei Kalmykov