The visual of the field is broken in Drupal 10.2.0

I can confirm this issue, this is causing tabledrag.js to not work properly and is throwing an Uncaught TypeError: Cannot read properties of undefined (reading 'colSpan')

It's caused by the core adding a remove button on a separate column.

@bakop, we could change the PR to follow the normal core behavior by adding an empty th tag. ([],)

    $header = [
      [
        'data' => [
          '#prefix' => '<h4' . $header_attributes . '>',
          '#markup' => $element['#title'],
          '#suffix' => '</h4>',
        ],
        'colspan' => 2,
        'class' => ['field-label'],
      ],
      [],
      t('Order', [], ['context' => 'Sort order']),
    ]; 

What do you think?

I just left a comment with an idea on how to not drop support for versions < 10.2 and there is a different idea presented in #7. Marking this as needs work so we can see what else we can come up with.

thanks @bakop
I can also confirm that the code worked on 10.2.1.

I pushed a revision that I believe should accomplish the same thing, but without duplicating the entire $header array. There may be a more elegant way to do this but this was my best idea so far. Could you test to ensure this approach resolves the issue?

I've Tested this on a freshly installed Drupal version- 10.2.2-dev & able to reproduce this issue there as well. After reproducing this I've applied the shared patch MR !9 mergeable successfully and it looks good to me.

Testing Steps:

1. Set up a Drupal 10.2
2. Enable/Install the Require on Publish module
3. Creates a content type with a referenced field (taxonomy) Select 'Required on Publish' with an allowed number of values set to "Unlimted" or at least "2"
4. Create a node> for the newly created content type.
5. Scroll down to the referenced field (taxonomy)- Shared before result.
6. Download the shared patch & apply.
7. Go to> Newly created content type> Scroll down to the referenced field (taxonomy) and re-verify this.

Testing Results:
After applying the patch, the "Show row weights" button is present now. RTBC+

Thanks for the patch. We stumbled across this issue after updating to Drupal 10.2 and all paragraph forms were broken.
Without the patch you'll get the following javascript error:
Cannot read properties of undefined (reading 'colSpan')