[META] List of blocking issues for Drupal that we should also look at

[jenlampton]

I'm making a list of these issues for one of my client projects, so I thought I could document them here also. I believe we already have issues for some of these things, and some of them have already been fixed for Backdrop, so I won't make the individual issues yet, but I'll include the d.o links for reference.

Prioritized list

• only src attribute allowed on links
• CKE5 removes width & height attributes on <img> | d.o issue https://www.drupal.org/project/drupal/issues/3321296
• No styles on block-level elements | d.o issue https://www.drupal.org/project/drupal/issues/3326261
• CKE5 removes empty inline elements (icons added with <i></i>) | d.o issue https://www.drupal.org/project/drupal/issues/3337298
• CKE5 removes <a>s that wrap HTML elements not natively supported by CKEditor 5 | d.o issue https://www.drupal.org/project/drupal/issues/3349893
• CKE5 does not allow full-screen editing drupal.org/project/drupal/issues/3331158

Other things we should look at

• #3321254: [upstream] Remove Format button does not remove style attributes
• #3333494: [upstream] CKE5 Code Blocks missing type around wrapper
• #3335991: [upstream] CKEditor 5 does not retain custom HTML tags that are not defined by CKEditor 5 plugins whenever /.*/ is not allowed (e.g. when filter_html is enabled)
• #3342874: [upstream] Allow inline HTML comments in ckeditor5

[olafgrabienski]

Not sure if to consider as 'blocking', but at least a regression: So far, CKEditor 5 doesn't support Full-screen editing.

Should this be mentioned in in the list above, or is it worth a separate issue?

More info:

• CKEditor issue: Full screen (distraction free) ckeditor/ckeditor5#1235
  (voting for the feature at issuecomment-918162952)
• Drupal issue: https://www.drupal.org/project/drupal/issues/3331158
• Drupal plugin: https://www.drupal.org/project/ckeditor5_fullscreen

[olafgrabienski]

An update re CKE5 removes empty inline elements (icons added with <i></i>:
This issue is fixed in Drupal by upgrading CKEditor 5 to version 39, see https://www.drupal.org/node/3379650.

[quicksketch]

CKE5 removes width & height attributes on <img>

This seems to have been fixed in v.40.0.0

No styles on block-level elements

This was fixed in ckeditor/ckeditor5#13341, CKEditor v38.0.0

CKE5 removes <a>s that wrap HTML elements not natively supported by CKEditor 5

This was fixed in 38.x.x (not sure which version but upgrading to 40+ should do the trick)

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So after updating CKEditor to v40+, all our blocking issues should be resolved, other than full-screen editing, which does not yet exist upstream.

[quicksketch]

Since all other issues have been addressed, let's split out full screen support into its own issue: #76