Multiple instances created of gtn_simulator

[ppppp]

Yes I do think at least that the issue only  occurs when first time starting a flight.
 at least I have never experienced  this with a subsequent flight.
 i can close  the superfluous instances via task manager and if only one instance remains ( I typically delete the upper to leave the lower one)  then it is working fine ( fighting for gui stops  and operation seems is normal)