Using fragmented channel sometimes fails

Version: 5.0 - 5.2.0p1
Platforms:

• windows, linux - server;
• windows, osx - client

We have a client-server game where server sends some configuration data to client at start. This data represents a 20K json-serialized string + some metadata. That's pretty large chunk, so we're using a ReliableFragmented QOS. This string is always the same, so its content is not the reason of...

Using fragmented channel sometimes fails