I didn't complete either quest 63893 or 65539, but I can still fly in Shadowlands. I'm in Chinese Server, not sure if it's particular or US/EU server is also like mine.

Can you dragonride and steady fly both?

It seems likely Blizzard has removed the requirement but I don't have any way to test it myself since the unlock is battle.net wide.

Yep. I can both dragonride and steady fly in Shadowlands and Zereth Mortis, I haven't been to Korthia, but I don't think there're any difference.

Thanks, I'm trying a new battle net account as soon as I get to level 20 I'll see if I can fix it up.

Can you dragonride and steady fly both?

It seems likely Blizzard has removed the requirement but I don't have any way to test it myself since the unlock is battle.net wide.

Appears Blizzard have removed the flying unlock requirements for all regions. Thanks for your bug report it means a lot to me.

Please try 11.0.2-8. Also, welcome back to WoW, glad you can finally play this great game again.