This is fixed if you uninstall the current release - 0.5.1 - and use the previous 0.4.3 release instead. The changes that were made for the recent version must've done something, because if you use the recent release and Interactic together, it makes it to where holding down the "drop item" keybind (Q by default) to charge up throwing an item far ceases to function. All that happens is that it drops like you hit the button, it doesn't recognize that you're holding it down to trigger Interactic's throwing feature.

Thanks for the report,
Fixed in 0.5.2