Steps to reproduce:
Create a new world (flat preferably)
Start breaking a block
While the block cracking, don't let it break and pause the game with ESC.
Save and Quit to Title and rejoin the same world.
???
The block cracks are still there, and the block's state is not restored even if you rejoin the world.
See attachments below for an example.
Linked issues
is duplicated by
Attachments
Comments

Can confirm in 20w49a.

Can confirm in 21w11a.

Can confirm in 21w13a.

Can confirm in 21w14a.

Can confirm in 21w16a

Can confirm in 21w17a.

Can confirm in 21w18a.

Can confirm in 21w19a.

Requesting ownership as the current reporter has been marked as inactive

Can confirm in 21w20a.

Can confirm in 1.17 Pre-release 1.

Can confirm in 1.17 Pre-release 2.

Can confirm in 1.17 Pre-release 3.

Can confirm in 1.17 and 1.17.1 Pre-release 1.

Can confirm in 1.17.1.

Can confirm in 21w39a.

Can confirm in 21w40a.

Can confirm in 21w41a.

Can confirm in 1.18 Pre-release 1.

Can confirm in 1.18 and 1.18.1 Pre-release 1.

Can confirm in 1.18.2.

Can confirm in 1.19.2.

Video attached. Can confirm in 1.19.4 and 1.20 Pre-release 4.

Can confirm in 24w38a. Also happens in multiplayer.
Confirmed in 1.16.1 and 20w28a. Related to MC-8472, MC-54587 and MC-69865. I would suggest forward-resolving MC-154673 to this ticket as this one has been kept more up-to-date and contains clear steps to reproduce.