Fortuna mission gets locked if you use the operator to activate the mission item.

[Gameguy1092]

In the mission where you're supposed to launch the K-bomb right outside of Fortuna, if you activate the K-bomb in operator mode, it seems to freeze at the defend the area mission objective. The operator (For me, at least) picked it up and I wasn't able to drop it. unless I was missing something. 

[bromeatmeco]

I had the same thing.  But I abandoned and retried with my warframe, still had the same issue.  I kill the corpus and all the four red diamonds by the minimap turn white, but the mission won't progress, just says "Defend the Gate" forever.

[Hekyl]

Dang happening to me now, was hoping I was just missing something.

[Beshkhen]

Same issue.

 

[(XBOX)DTaTT]

Same problem