Xbox 1
In a bunker mission while exploring i have completed task before the current task. Example found the what was drainingthe bunkers power before turning on the power. Now the power is on its asking me to do the step of finding what’s draining the power but ive already destroyed now i cant progress. How can i fix this?
Its preventing me from completing other missions
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More too destory ? Or just pick up the radio on floor next to dead robo dog too carry on 
if your in Overby air base
If not the above , which bunker are you trying ?
Minkin bunker the second bunker you go to
It sounds like its a bug like a lot of us on here its not always the same bugged bunker or mission thats broke , As an example my friend has unlocked all Bunkers but cant complete a mission due to a door key missing, which i have completed myself solo . so my bunker problem is Uttern bunker bug can not get to the warboard LOL 
, i am sorry i can’t help you , the devs are working on many ’ mission and bunker related bugs as we speak ( Devs last letter to community ) , until then give minken bunker a swerve and go and lose sum bullets and sanity in another area 
I have this exact issue right now as well, I made a post on it, and also noticed someone else did too. Easy fix, give us an option to restart every mission from the start. Then you could always replay missions you liked, and a quick fix for a problem like this. Does anyone know when the next patch is? Cause I have a feeling I’ll be stuck here now for a while and have to just leave the area and start missions elsewhere. My worry is if I’m picking up papers or listening to tapes that are for the missions you unlock on the war board, will that glitch out those missions later on?
Patch for consoles should be anytime now , your idea about missions Restart is a great idea , AY THE DEVS PROBLEM SOLVED ABOVE . 
And too answer the bottom half of ye question " picking up missions from WARBOARD have not Glitched out at all in fact i was expecting the same too happen ‘’ imagine having double missions cos the games a bit Dizzy at times lol
Well I’ve been finding tapes and stuff for missions you unlock through the war board, and the world mission icon will show up but it says “no title provided” and doesn’t appear in my log. So I’m assuming they’re ones that get unlocked through the war board.