Starting engine sounds when the engine already runs

[Tornado]

What I discovered after the 2.5.1 update is another sound related issue. When you start the mirage on the runway (engine running) or start in the air, you can hear the engine starts up again. It is in the background however because other sound files are louder in the air and on the runway, but you can hear it . Does anyone else discovered this bug?

Also when you start the engine it start with the sound of the engine shutdown. When the engine spools up the sound of the spooling engine suddenly stops and other sounds files take over. It runs not smooth however.