Same here, Twisting Nether. Experienced the same issue a few days ago or sometime last week…
Trying again Silvermoon , working now @ silvermoon
Read your comment, closed and restarted and yes it works for me now 
ty
That’s the worst no? That apparently ‘some’ people got DC’d who now miss out on everything while the rest goes on.
i can log in now so i guess its fixed
Can confirm im back in
+1 just start first boss in LFR
My problem solved automaticly
im back boyzzzz!!!
I have the same issue!!!can’t join!
fixed, carry on.
it worked now…
works for me now
Working as usual now.
Working on Twisting Nether now (For me)
Had the same issue and fixed it by deleting Config.wtf file in World of warcraft folder !
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The meat is back on the menu now bois
Ironically enough, works now as i just wrote the text above.
(Im Dojira)
whos waiting for the loading to finish 
Same thing happend to me. Fighting in a delve then just DC. Stuckl on retrieving character list…