a lot of 1.21 mods dont go past 1.21.1. my modpack on 1.21.1 and has mousetweaks + a mod that backports the bundle recipe added in 1.21.2. unfortunately, with mousetweaks there's no way to scroll through bundle items and the fix for it is only on 1.21.3 (2.27).

This mod seems to fix it https://modrinth.com/mod/bundle-backportish

There was another mod called "bundle scroll" that didn't work

Could you try if this backported 1.21.1 Fabric version with the fix works fine? https://github.com/YaLTeR/MouseTweaks/actions/runs/14636252473/artifacts/2999978675