Pay with PayPal Reusable Block: Can't edit the reusable block inside page or post

[ash1eygrace]

Steps to reproduce

1. Starting at https://yoursitename.wpcomstaging.com/wp-admin/edit.php?post_type=wp_block
2. Click to Add New, create, and save a reusable Pay with PayPal Block
3. Add the Reusable Pay with PayPal Block to a page or post
4. Click to select the Pay with PayPal Block and click Edit
5. Make changes to the block's title, description, amount, and click Save.

What I expected

I expect the edits I made to be saved and update the reusable Block since I was able to edit the fields.

What happened instead

The block looks like it saves but the changes don't stick.

Browser / OS version

Tested on Chrome 83 on macOS (Catalina)

Context / Source

user-report zd-3133249

[jerrysarcastic]

Adding here that I had this come up for a user in 21880742-hc where they were having the same issue, but it was not a reusable block, but a copy of an existing block instead.

Steps to replicate:

• set up a test page with a standard Pay with Pay Pal block, and then publish.
• return to the page and make a copy of the existing block, make some edit to it (I changed the title) then save the page
• if you view the page, the edit is lost, and both blocks appear identical
• if you return to the editor, the two blocks also appear to be identical, and the edit is not saved here either

Screencast: https://d.pr/v/HXgbrp

As described above, it is possible to edit the second copy, but upon saving changes those edits are lost, as if the two blocks are somehow in sync with one another.

[jerrysarcastic]

Confirming here the original Pay with PayPal block, and the copy made of it, seem to be linked. If you edit the original block the second copy mirrors those edits. There is no difference between the blocks as expected

Screencast: https://d.pr/v/xm6Jav

[davoraltman]

Have a similar issue in 3261612-zen. If you duplicate the Pay with PayPal block, the changes you make to any of those blocks don't stick at all.

Screencast: https://d.pr/i/y79l5a/s8k2tKIAX6

[galakhyati]

I have another instance of duplicate/copy of the Pay with PayPal block where the changes made to the copied block will make changes to the original block.

Ticket: 3575026-zen

Screencast of my test site: https://d.pr/v/SYrqO8/SFxbVzVsbj

[AtrumGeost]

We got a report from an HC here pbEMJv-u8-p2 (includes steps to reproduce and a gif)

[lakellie]

The issues reported here that are not related to a reusable block should be reported here instead: https://github.com/Automattic/jetpack/issues/12801