When using FloatingItems together with SlashBlade, katanas that drop as blade stands (entities you can right click to pick back up) will duplicate themselves.

Video of expected behavior (only slashblade enabled):
No FloatingItems.webm

Video of bug: (floatingitems and slashblade enabled):
FloatingItems.webm

Modlist:

Log File: fml-client-latest.log

That did not end up working, unless I did the configuration wrong.

What you should be able to do is add the affected item IDs to the FloatingItems blacklist in the config file. Hopefully, that will work, let me know if otherwise though.