I'm going to need you to help me get a little more detail as to what your situation is so I can get to the root of your problem.
Sounds like most are not having a problem but I have heard some things about this occurring.
When this occurs are you in a group or a raid, I know you mentioned raid but I need to know for sure.
Another question is, was everyone in the same zone when you had issues porting in or with your invitation process.
Any specific details you can give me will help
Hey Akkadius, Yes all toons were in the same raid in the same zone standing right next to each other.
As Xeky has mentioned, I tested it more today and he is right. The issues with quest issue/receiving and porting in only occurs in user created instances of the Nexus and Stonehive. I recreated all the bugs today again and as soon as I moved to public, everything went smoothly. All toons got the quest immediately and were all ported into the expedition zones for both Dranik and Mini T5. I think maybe adding a dialog to the Miner to remind people to leave Stonehive/Nexus Instances rather than going in to mess with the code would be sufficient. Then again, it might be a really simple fix.