Taxonomy metabox is empty with Gutenberg/master

[dariaknl]

The issue is found in automated night tests where one of the test jobs is built from wordpress-seo trunk and gutenberg master.

How can we reproduce this behavior?

1. Checkout Gutenberg master, build plugin.
2. Checkout wordpress-seo trunk, build plugin.
3. Activate both plugins.
4. Go to create new Category:

• note, the Description filed now contains only one edit view:

• Check console:

• Metabox is empty:

Used versions

• WordPress version: 5.1.1

[afercia]

git bisect reports the following:

c7f846a047463550e3bb09e414bbaadd20356c9f is the first bad commit
commit c7f846a047463550e3bb09e414bbaadd20356c9f
Author: Riad Benguella <benguella@gmail.com>
Date:   Thu Mar 28 09:34:38 2019 +0100

    Data Module: Support parent/child registries (#14369)

See
WordPress/gutenberg@c7f846a
WordPress/gutenberg#14369

[LifeSteala]

I had a similar issue. The fix for me was by changing the Site Language to something else and then checking the Meta box and it came back. I then reset the Site Language back to what it was.

This may help someone.

[IreneStr]

Fixed in #12614