Windows 8.1 universal app crashes on Windows 10

My app is already published in the Store, it was built on Windows 8.1 and it perfectly works on 8.1 (desktop and tablet). However it crashes on Windows 10 just after I navigate from page that has a WebView control (though this might not be the reason). I looked at windows logs (eventvwr.msc) and found out the crash has happened in a system library.

Has anybody faced problems with Windows 8.1 apps running on Windows 10?

UPDATE 1: information from system's event log
Faulting application name: ....
Faulting module name: twinapi.appcore.dll, version: 10.0.10240.16397, time stamp: 0x55af0938 Exception code: 0xc000027b Fault offset: : 0x0001cab9
Faulting process id: 0xe30
Faulting application start time: 0x01d0daabb7ab6d89
Faulting application path: C:\Program Files\WindowsApps.....
Faulting module path: C:\Windows\System32\twinapi.appcore.dll
Faulting package full name: ....
Faulting package-relative application ID: App

UPDATE 2
With help of this article Debugging a Windows 8.1 Store App Crash Dump I've cracked crash dump and found out the problem method in my code. That method has code that captures a screenshot of a web page with webView.CapturePreviewToStreamAsync(memoryStream); and saves it to local file. I suspect webview causes the crash because its core should differ from one on windows 8.1 (is it based on MS Edge instead of IE?).