Can play matches, but can't watch online matches

Code:
[Client] Sending connect to 146.66.157.64:28080
[Client] Received S2C_CHALLENGE [436868402 auth 3] from 146.66.157.64:28080
[Client] Sending C2S_CONNECT [44 protocol 436868402 auth 3] to 146.66.157.64:28080
[Client] Received S2C_CONNECTION from 146.66.157.64:28080 [addons:'']
[Client] CL:  Connected to '146.66.157.64:28080'
[SignonState] CL:  Suppress INetchannel::Transmit() in loopmode( remoteconnect )
[Client] CL:  CLoopModeRemoteConnect::OnClientFrameSimulate switching to "levelload" loopmode with addons:  
[EngineServiceManager] SwitchToLoop levelload requested:  id [2] addons []
ChangeGameUIState: DOTA_GAME_UI_STATE_DASHBOARD -> DOTA_GAME_UI_STATE_LOADING_SCREEN
[Client] LoadingDisplay changed from NONE to LOADING (map="")
[SignonState] CL:  CNetworkGameClient::OnSwitchLoopModeFinished( levelload : success )
[SignonState] CL:  Permit INetchannel::Transmit()
[Client] CL:  CLoopModeLevelLoad::MaybeSwitchToGameLoop switching to "game" loopmode with addons ()
[EngineServiceManager] SwitchToLoop game requested:  id [2] addons []
[Client] CL:  CNetworkGameClient already exists for connection to '146.66.157.64:28080'
[Client] CL:  connection to '146.66.157.64:28080' already started
[Networking]       client   146.66.157.64:28080[0]:  high packet loss detected flow incoming:    0ms latency,     2/    4 dropped (50.0%)
[SplitPacket]       client   146.66.157.64:28080[0]:  split packet seq #2 restarting, just received packet 29
[Networking]       client   146.66.157.64:28080[0]:  high packet loss detected flow incoming:    0ms latency,     2/    4 dropped (50.0%)
[SplitPacket]       client   146.66.157.64:28080[0]:  split packet seq #5 restarting, just received packet 62
[Networking]       client   146.66.157.64:28080[0]:  high packet loss detected flow incoming:    0ms latency,     2/    4 dropped (50.0%)
[Networking]       client   146.66.157.64:28080[0]:  high packet loss detected flow incoming:    0ms latency,     2/    4 dropped (50.0%)
[Networking]       client   146.66.157.64:28080[0]:  high packet loss detected flow incoming:    0ms latency,     2/    4 dropped (50.0%)