One quest that's bugged right now doesn't give you 500 XP right? So people go OMG my lifes over I can't level now? How am I going to live through this horror.
Then you do 1 or 2 side quests and get that 500 XP and your back in the same place as before. Not game breaking at all.
We won't be able to reach a higher level now because we are missing XP! Which is also wrong, if you do side quests the main quests can easily go grey, if you do the main story the side quests can easily go grey. (Grey = no XP) They put enough XP that you can take different paths but in the end SOMETHING will always turn grey and not give you XP. So it does in fact NOT hinder your ability to level or play the game.
You could feel mad, or jipped or whatever but in the end it's how you personally take it. Personal issues with things and Opinions are a lot different than a GAME BREAKING BUG that everyone's yelling wolf about.
I get it I do I just hate how they spread it all over socially, through media and websites giving everyone the wrong idea and making the game look at lot more broken XP wise than it really is.
Don't take my jests personal BTW I've written the info about it so many times I gotta stay entertained.