Description (Required)

when you step on the slimefun elevator it replaces the item ur holding for the book

Steps to reproduce the Issue (Required)

https://streamable.com/qf79c

Expected behavior (Required)

to add it to the inventory not replace the item

Server Log / Error Report

Environment (Required)

• Minecraft Version: 1.14.
• Slimefun Version: 248
• CS-CoreLib Version: 69

You are using quite outdated versions.
Update CS-CoreLib and Slimefun before posting an Issue.