Gutenberg + Themes: Week of May 3, 2021

Hello! This is the 47nd weekly roundup of theme-related discussions, fixes, and developments in GutenbergGutenberg The Gutenberg project is the new Editor Interface for WordPress. The editor improves the process and experience of creating new content, making writing rich content much simpler. It uses ‘blocks’ to add richness rather than shortcodes, custom HTML etc.  

Please weigh in on the tickets below — your feedback is crucial and appreciated.

Issues / Discussions & PRs

  • FSEFSE Short for Full Site Editing, a project for the Gutenberg plugin and the editor where a full page layout is created using only blocks.: Theme.jsonJSON JSON, or JavaScript Object Notation, is a minimal, readable format for structuring data. It is used primarily to transmit data between a server and web application, as an alternative to XML. configurations with styles not expressed in a blockBlock Block is the abstract term used to describe units of markup that, composed together, form the content or layout of a webpage using the WordPress editor. The idea combines concepts of what in the past may have achieved with shortcodes, custom HTML, and embed discovery into a single consistent API and user experience.’s block.json breaks FSE #31560
  • FSE: Add a filterFilter Filters are one of the two types of Hooks They provide a way for functions to modify data of other functions. They are the counterpart to Actions. Unlike Actions, filters are meant to work in an isolated manner, and should never have side effects such as affecting global variables and output. to determine whether a theme should use the Site Editor #31235
  • Themes: Presets used in patterns: register them as user presets? #31124
  • Themes: Substitute CSSCSS CSS is an acronym for cascading style sheets. This is what controls the design or look and feel of a site. Custom Property by the mechanism used in layout and duotone #31488
  • Themes: Update the create a block theme tutorial #31269
  • Themes: Optionally, rendering classic navigation data source in Navigation Block #30852


  • FSE: Show more Settings in Block Toolbar in Site Editor #31286
  • FSE: Fix template loading order for child themes when no explicit template exists #31336
  • FSE: Iframeiframe iFrame is an acronym for an inline frame. An iFrame is used inside a webpage to load another HTML document and render it. This HTML document may also contain JavaScript and/or CSS which is loaded at the time when iframe tag is parsed by the user’s browser. the template editor #31375
  • FSE: Post Content: Prevent infinite recursion #31455
  • FSE: Unify the post tags and post categories block under a unique post terms block. #31458
  • FSE: Block Library: Stabilize some theme blocks for WP 5.8 release #31423
  • FSE & Themes: Split theme.css styles loading #31239
  • Themes: Fix for template order logic bug introduced in 10.5 #31478
  • Themes: Fix: Allow post comment button to inherit button & global styles automatically #31338

General Resources:

Thanks @allancole for compiling this week’s summary. Please comment if there’s something you’d like to highlight 🙂