Yes, since nethergold can be harvested using several methods (pick for 2-5 nuggets, fortune3 pick 8-12 nuggets, silktouch +smelted for 1 ingot), seems you should be able to get exp if using pick or fortune3 pick, since you won't be smelting it.
It isn't fixed in the 1.14.1 pre-1 snapshot. Still happens, and areas of the world that were darkened due to the bug are still darkened once you update the world to 1.14.1 pre-1 snapshot.
Unproven Theory: I believe this may be related to slime chunks. On my server, several players have the same chunk(s) going dark when they get this bug, and it seems it is their slime chunks. Not to also mention, I really haven't noticed any slimes in my mine tunnels, which I normally see them often, because I dig them 3x3 and turn them into vine farms.
Ok, played for a few hours and an ocelot actually spawned ! First time since 20w12a ! But, still no parrots.