You will bounce forever when you jump with slowfalling on a bed.

Steps to Reproduce:

1. Place Bed
2.

/effect give @s minecraft:slow_falling 60 0 true

3. Jump on the Bed (You need to land in the middle of the Bed)

Observed Results:
I bounced forever. It looked like my screen vibrated.

Expected Results:
I bounce a few times until I stop.