Alert Mission Changes Objective Dependent On What Warframe One Uses

[Tali]

i dont know if this is a bug or a feature but for now i will treat it as a bug. So there was a alert that had a reward of 300 oxium and it said it was a grineer spy, so i joined it with a loki and then it tells me its a mobile defense instead. i thought that was weird because it said it was a spy mission, so left and joined with my nova and then it turned the objective into a deception instead.

i remember this has happen before with alert missions changing objective dependent on what Warframe one uses but it is a long time ago since i last experienced this.

 

Anyone else experience this ? or is it just an isolated case