The bug
When trying to trade with villagers without trades, the "Villager disagrees" sound will be played twice.
Steps to reproduce
Spawn a villager away from any work stations
Try to trade with it
→ Notice the "Villager disagrees" sound is played twice
Related issues
Comments

Not fixed in 1.14 Pre-release 1.

@TheBoy358 can you upload a video or something showing that is not fixed?
Can also confirm that this is not fixed.
This still happens with baby villagers in 1.14 Pre-Release 3
Edit: apparently that's MC-148465
Can confirm.