InvalidHotbarFixer is a lightweight and simple plugin designed for Bukkit, Spigot, or Paper Minecraft servers. It fixes the issue where players in Creative mode are kicked from the server with the error message:
"Invalid hotbar selection (Hacking?)".

This issue typically occurs when players use the middle mouse button to copy items in Creative mode, causing unnecessary disconnections. The plugin intercepts the kick event triggered by this reason and cancels it, ensuring players can continue playing without interruptions.