To get to the point: I joined the Imperial Legion and did the initiation quest for them very early on, but I didn't actually start the Jagged Crown quest until about 2 or 3 days ago. Now, prior to starting it, I had come across Korvanjund and cleared the outside section of bandits and had gone inside the door only to find a single bandit and the path ahead blocked by rubble so I didn't think much of it and just left after grabbing whatever looked valuable.
Upon starting the Jagged Crown however, everything went smoothly until Rikke and I got inside. I figured there was a hidden door or something I had missed and it was going to open up, but Rikke and Co. just ran straight to the rubble and spent a good 5 minutes running in front of it. I thought maybe a script had messed up and dialog was supposed to happen so I waited for 2 hours, only to find when the wait screen ended that Rikke and Co. had disappeared to further inside the dungeon, which wasn't surprising, but left me at a loss as to whether or not there's a way past the rubble.
I've spent a good while checking out the small interior section I have available and I've noticed the rubble allows projectiles and weapon swings to pass through it, but my actual character and my shouts are treating it like it's a wall. The bodies of the bandits outside the dungeon are still there, so I'm thinking (hoping) that maybe the rubble will disappear alongside the bodies after a while.
I'm curious as to if anyone else has hit this particular issue and if there's a way around it (besides starting a new character, thank you). I'm assuming that the rubble isn't normally there and only shows up if you enter prior to starting the quest (presumably to prevent you from screwing with quest items), but if that's the case it looks like either Beth forgot to put in a means for the rubble to be removed or it's glitched out on me.