Metadata broken in UWP

I have created a HoloLens App by using Cloud Reco. I attached metadata to Target Manager via Developer portal.

At Unity Editor,metadata is quite valid. But after I compiled to UWP App,metadata is broken.

for example original text : {"foo": "日本語"} At Unity Editor : {"foo": "日本語"} At UWP(Visual Studio) : {"foo": "日本語"}

I think reason is difference between .NET Framework and .NET Core.

https://teratail.com/questions/95449?sip=n0070000_019

Accoding to above page, .NET Core's HTTP request uses GZip compression.

for example:

var handler = new HttpClientHandler(); handler.AutomaticDecompression = DecompressionMethods.GZip; var client = new HttpClient(handler);

thank you.