Almost every time I use hearthstone or zone into a dungeon, the quest objectives disappears from tracker and map.
Doing a /reload will make them come back.
I don't know if it's a known issue or it might be a conflict with another addon,

Did 1937623 fix this fully? Or just map side?

It actually seems fine now. I haven't noticed any issues with the tracker since last release.

Just adding to this: the same thing happens if you travel with boat. After the loading screen, the objectives disappear. As a matter of fact, this issue seems to be triggered by the loading screen itself.

Also adding: this issue is not new; it has been plaguing the questie tracker ever since the refactor. I think it was since the initial release of 6.x.x or something like that. Super annoying, it used to work well before.