This whole issue of XP has got a little confused, but to the best of my knowledge, there are two separate issues:
1. "Greyed out" quests, i.e. quests at a much lower level than your own, don't give XP. This is by design (presumably to try to keep the game balanced). There are still quest rewards for these, just not XP.
2. There is a bug that came from one of the patches and only affects console versions that means that some other quests are also not getting XP.
Regarding those two linked articles, the Gamespot one reports it accurately. The IGN one is as confused as a lot of other people are.
Ah I see! Well good to know. Thanks for clarifying. I have only been able to find information on the 1 bug but it appears there is another that flat out wont give you xp regardless of level? Really appreciate your time Dragonbird. Take it easy!
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This is incorrect. I and many other are on PC and are experiencing the bug as well.
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The link in the Gamespot article has 16 pages and was created by a player, the one I posted has 26 pages and was started by Marcin Momot. How they are the same thread in your world is beyond me.
It is linked in the IGN page I posted "according to" highlighted in red fyi.