Riding a display entity no longer causes camera movements to be interpolated, resulting in jittery movement essentially stuck at 20 FPS. "teleport_duration" doesn't change this.

To reproduce:

Summon any display entity

/summon text_display ~ ~ ~ {Tags:["display"]}

/ride @p mount @n[tag=display]

(Repeating)

/execute as @e[tag=display] at @s run tp @s ~ ~ ~0.2

Notice how the camera is no longer smoothly moving. This is also the case when "teleport_duration" is being applied. The display itself also