I solo’ed the Light’s Breach LFR (from Dalaran) 2-3 weeks ago and got to the end just fine, first time through without ever having done the raid before. (So obviously it was easy to find the way through.)
Maybe 10-12 days ago, I tried and there was no way to go from the felhounds (the second boss) to the High Command final boss. Although I’d only done it once, I believe there was a teleport pad you used to get to the next section.
I tried it again last night – still, no pad or way to reach the final boss. Not sure if the recent patch rollout screwed something up… Could someone look into this?