Tick chart does not fresh after reconnecting

I use MC with Lmax.
sometimes the connection is lost, soon reconnecting will be ok.
but the tick chart does not update for a long time.
the 5 min chart is ok.
it is about heartbeat or something?

Hello xiaomajia,

Please make sure you are running MultiCharts .NET 9.0 Release Candidate.

do you mean that has been resolved in MC 9?

In MC 9.0 LMAX connection has been improved and should address the issue you have. Also an option has been added to LMAX broker profile/data feed configuration that allows switching usage of heartbeats for connection loss detection.

Thank you very much!