I noticed that we have a few methods with the gutenberg_ prefix in the block-library packages. I'm looking into this.

@felixarntz, I already fixed gutenberg_ prefix issue in Gutenberg repo. See WordPress/gutenberg#47649.

@ntsekouras and I will start working on package updates that include recent fixes.

Mostly looks good, just one nit-pick and the remaining gutenberg_ prefixes that need to be replaced. Is that something you can just update in this PR or does it require a fix on the Gutenberg side?

Actually, I can't touch these files here, even the nitpicks suggested here because every time someone will do npm install it will revert these changes locally causing confusion. So I think we should instead make a PR to Gutenberg and wait for the next round of package release.

I've just noticed that there's a blocks fixtures tests in Core right now. Anyone know why this test has been moved from Gutenberg to here? It's just going to add maintenance burden for us for a small value since all the code for blocks is coming through package. In other words, these tests are better by their code (in the Gutenberg repo).

Ok I've managed to fix all the failing tests here. It's not perfect but It should be good to land to unblock the PRs that depend on it.

I've noticed a small style glitch on the empty post placeholder. Something to keep an eye on after all the backports.

@felixarntz It needs to be addressed on Gutenberg, that way it comes in the next package update. You can't make changes to these files in Core.

@youknowriad Ah right, forgot about that, thanks!

This has been committed

Thank you, Riad!

The changeset - https://core.trac.wordpress.org/changeset/55246.