Unable to put specific amount of items inside of a bundle using touch controls

Steps to reproduce

1. Put a bundle and a stack of items in your inventory.
2. Tap and hold on the stack of items to select half of the stack.
3. Tap on the bundle.

Expected results

Half of the stack goes into the bundle.

Observed results

The entire stack goes into the bundle.

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I was playing like any other player and i haved an stack of oak logs and a stack of coal, i wanted to put an half stack of the logs and put them in a bundle but instead it puts the whole stack inside it please fix that.