Step It Up

Step Up blocks smoothly instead of Auto Jump.  Simple and fast mod.

Client Sided mod

This is basically the same function as https://www.curseforge.com/minecraft/mc-mods/stepup but now on updated Minecraft versions (1.18+), however the code is completely different and instead of using a keybind to toggle the Step Up feature, we use Cloth Config configurations

Configuration

Config file is at config/stepitup.json5 in your Minecraft game folder.  You can enable/disable the Step Up feature, and enable/disable it when sneaking (requires restarting game to take effect). 

Recommended to use some sort of Mod Menu, then you should be able to configure it through that mod menu dynamically without restarting your game.

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Credits

All code by spoorn

CurseForge mod icon by DIMaalF