Bukkit

What steps will reproduce the problem?
1.Make a TG and give it the -i (clear inventory) option.
2.Get some stuff in your inventory.
3.click sign

What is the expected output? What do you see instead?
What I expect to happen is for it to clear my inventory.  But instead, nothing happens.  The stuff is still in my inventory!  It displays a message that it was cleared, but nothing actually happens.

What version of the product are you using?
v1.10.17

Do you have an error log of what happened?
N/A  Not an error message.

Please provide any additional information below.
Please fix ASAP, please.