Unable to place items into inventory slots sometimes when setting the key bind of both "Attack/Destroy" and "Pick Block" to Left Button

The bug:

Unable to place items into inventory slots sometimes when setting the key bind of both "Attack/Destroy" and "Pick Block" to Left Button.

Steps to reproduce:

1. Set the key bind of both "Attack/Destroy" and "Pick Block" to Left Button.

2. Open the inventory.

3. Drag an item into an empty inventory slot.

Expected result:

The item will be placed into the slot normally.

Actual result:

You cannot place the item sometimes.