Error behind proxy with Auto detect set

We have a corporate licence,
when we install host behind the proxy and system is configured to use proxy. I get a number ID but Teamviewer can't connect to host. I can see a "Připojování..." (Conecting...) at Host PC after tryto connect to system, but nothing happend and after few second Error occured. It started after upgrade to v14, before all was working.
We find a workaround, but thats a problem sometimes to use it. We need to set Proxy in TV, connect to it and after that switch back setting to "Auto detect". After this is all working behind proxy.