Inventory glitch?

I can't delete items properly. I have to click with two fingers to add things into my inventory in Creative Mode and whenever I try to move the item, it doesn't move and when I click with two fingers to move the item, the item just duplicates. Also, I cannot destroy items. This also occurs on version 1.7.10, so I think it may have to do with the launcher, but this doesn't really affect the launcher itself. Also, this glitch occurs with and without Forge.