I have the same issue as people posting above me. None of galactic seasons missions I recieved after reset can be finished. Those missions are Weekly PO: Corewards Flashpoints, Weekly PO: Coreward Worlds Operations, Daily PO: Black Hole Daily Missions and Daily PO: Coreward Heroics.
I rerolled one weekly and one daily but I'm still stuck with one unfinishable weekly and I also already lost points for the second not working daily due to todays reset.