Texture glitch

Do you mean you are clicking on Sand Block and it changes to Kelp or stairs?

Same issue.  In multiplayer my friend is seeing the correct block, but on my end placing dirt and stone is showing as one or two pistons.  Opening a door will turn it into buttons.  Using a button will turn it to stairs.  Rail turned into quartz❓ .  Just tapping a block w/o a tool will turn it. Work tables are unusable as they turn to random blocks.  Breaking the unwanted blocks, they don't pick up and get added to inventory.

Does this issue occur in all worlds, including those created in Beta 1.16.210.59?

I have this issue too starting yesterday.  Why is this marked as resolved 5 days ago?  Its obviously NOT RESOLVED

Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response

Still we need the answer if this issue occur in all worlds, including those created in Beta 1.16.210.59?

Also, just a reminder, to make your bug report as effective as possible, please try and include the following steps to reproduce the problem:

Steps to Reproduce:
1.
2.
3.

Observed Results:
(Briefly describe what happens)

Expected Results:
(Briefly describe what should happen)

If your ticket does not look like the example given here, then it's likely to be closed as incomplete.

This ticket will automatically reopen when you reply.

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Steps to Reproduce:
1. Open a minecraft world or create new one (including Beta 1.16.210.59)
2. Let another player join your world.
3. That player should right-click on blocks.

Observed Results:
Some blocks (dirt, wood, ...) or objects (lanterns, ...) transform into another ones.

Expected Results:
Nothing /or (if u have a block in your hand) placing the block /or interacting with objects (levers etc.)