Picking up items doesnt stack them into the offhand slot.

When having an item, for example logs, in the offhand slot and colecting more the new items go into the normal hotbar.

What I expected to happen

The logs stack into the offhand slot

What actually happened

The logs went into the normal inventory

How to reproduce

• Go into survvial mode and grab one block
• Put it into the offhand slot with the F key
• Grab another block of the same type