Us Surface #2

During this mission on the Gold Edition when clicking on the Enemy Sub on the TAC unit to plot the way point, the engine always set itself to 'all stop' ?

Ship did change its heading but it wanted to 'all stop' everytime. I completed the mission but this must be a bug on this mission.

It has to all stop first to pivot turn usually.

indeed i understand that but once it had pivoted the sub being 400Mts away remained all stopped.