This is the same issue as MC-102360 but affects the minecraft:jump_strength attribute instead of the Jump Boost effect. Auto-jump ignores the minecraft:jump_strength attribute. As a result, reducing it to a value where you jump less than one block high causes the player to repeatedly attempt to jump over blocks they can't jump over, and increasing it doesn't make the player automatically jump over pillars taller than one block. I would also consider this issue related to MC-103236.

How to reproduce

1. /attribute @s minecraft:jump_strength base set 0.3

2. Turn on auto-jump
3. Move towards a block that you could normally jump over

Expected result

Auto-jump would not attempt to make you jump over the block, since it's not possible.

Observed result

Auto-jump causes you to attempt to jump over the block, even though it's not possible.