Linux problems!

I just got Linux and when I opened Minecraft I was like "oh wow its so fast" but then I realized a bug. When you use shift, you cant switch to hot bar 2 and hot bar 6. That's is annoying. Another thing is that I cant use shift to switch items from one inventory to another. (example: Trying to take items from the chest to my inventory using the shift but it wont work on Linux)... Please fix it!