• SilentGear-1.15.2-1.10.0+131
• SilentGems-1.15.2-3.5.8+91-hotfix-479
• SilentLib-1.15.2-4.6.6+59
• Forge 31.2.5

Links/Images

https://i.imgur.com/7QTfFNB.png
https://pastebin.com/XUw7GmPa - debug
https://pastebin.com/4aRBpUVk - log

Steps to Reproduce the Problem

add rod to tool head

Tipped Upgrade does it too, on tools and armor

Removed synergy display value from tools, since it's meaningless in more recent versions.