Flawed mechanics of dragging items with touch controls since 1.19.40

Since 1.19.40 the developers introduced touch gestures to drag and drop items:

The issues I want to mention are related to double tapping on stacks of items or single items in inventories:

Issue Nr. 1: Dragging with Double Tapping is inconsitent:

Steps to reproduce:
1. Grab multiple stacks of items
2. Open an empty chest
3. Double tap on all stack of items in player's inventory quickly.

Expected results according to changes: All items are supposed to be dragged inside the chest.
Results: Not all items get dragged into the chest. Sometimes a square appears around the stack at the first tap and disappears after the second one when presumably missing the middle of the slot slightly. The items did not move at all.

Issue Nr. 2: Double tapping to drag vs. double tapping to assemble items

Steps to reproduce:

1. Grab a full stack and an incomplete stack of the same item, for example 64+1 cobblestone
2. Open a chest
3. Double tap on the incomplete stack (1 cobblestone).

Expected results according to the changes: the 1 cobblestone is supposed to be dragged into the chest.
(Since you are able to drag single items on other platforms as well.)
Results: The full stack changes slots with the incomplete stack.

Issue Nr. 3: shift dragging with the help of a keyboard does not work
1. Connect your mobile device to a keyboard.
2. Open a chest in Minecraft.
3. Press shift and then touch the stack of items that you want to put inside the chest

Expected results: The items are supposed to go inside the chest, immediately after tapping the stack of items once, just like the versions prior to 1.19.40.
Results: The items do not get dragged inside the chest, immediately, once but they do after tapping twice.

Issue Nr. 4: Double Tap to unselect items quickly is not possible anymore
1. Take any item, for example an enchanted item or shulker box with content.
2. Tap on the item (to view Enchanments or shulker box content for example)
3. Tap again to unselect the item.

Expected results or intented results: The items get unselected and do not move.
Results due to changes: The item that is supposed to be only unselected gets dragged/ moved.

Consequences:
Double tapping to drag stacks of items is a flawed change to touch controls:
Items cannot be moved quickly and consistently.
This change also interferes with old mechanics which involve double tapping to assemble items to stacks, for example, or double tapping to unselect items.
Shift dragging is not possible anymore after this change.
In comparison to other platforms like Windows 10 or Controller, these new changes do not match up their speed of dragging items. They even made it slower since shift dragging is not possible with touch controls anymore.

Suggestions:
Fix the flaws mentioned above.
Or even better: Remove the mechanic of double tapping to drag.
Add a touch button in inventory menus that activates dragging items mode. It allows a player to drag stacks of items just by tapping on them.