Commit
160a4ecfacd455c3d73f37d54ea55b0c54e2cf82
by radfastTabRegistry - fix issues on returning to main inventory tab from another tab
Without this change, if you open the player's inventory, click to the Tinker's Construct inventory tab, then click _back_ to the vanilla inventory tab, any changes then made to the player inventory (e.g. crafting, or moving an item from a slot to a different slot) do not register on the server.
For further info please see the issue reported here https://github.com/micdoodle8/Galacticraft/issues/782
I hope you already knew we are making use of your TabRegistry code for Galacticraft's inventory tab as well - for compatibility reasons :)