Split Touch Controls Bug

I started my game in split touch controls. After getting a buket i couldnt pick up water without changing my settings. It just wouldnt work.

What I expected to happen was...
I thought the water/lava will get in the bucket :/ It didnt work till i hanged back.
What actually happened was...
Nothing... Just Nothing...

Steps to Reproduce:
1. Start any game
2. Set to "Split Touch Controls"
3. Craft/Get a bucket.
4. Try to carry water.
5. Put a sad smile on your face.