Universal Windows App Webview memory leak - clear cache

Question

I am developing a UWP-App which has a webview control on it. Most of our code is JavaScript.
The app consumes tons of ram over the time and we have no clue where this memory leak comes from. The is almost no nativ code running, most of it is javascript, we cleared the DOM which is only about 5MB. The size of the app at this moment is about 300MB. I also tried to run the GC with almost no effect.
At start the app has a size of about 50MB, Increasing fast to about 100mb and then slowly consumes more and more RAM. I had a maximum of 1.8GB. Does anyone has/had the same problem? Is it a equivalent leak than the webbrowser control had?

Update

The cause of the Problem is the growing cache of the WebView. Is there any chance to clear the cache, without closing the app?

Answer 1

As it seams, the problem wasn't the cache, but the Intel App Framework we use.
The Framework we use is an elder version (2.0) which doesn't release the references properly.
An update to version 3.0 solved the problem.