WP Pattern Directory Pattern Editor not working properly due to store core/interface' already registered error

[jhimross]

Describe the bug
When attempting to create a new pattern using the WordPress Pattern Directory editor, an error "Store 'core/interface' is already registered. i@registry.js:220" appears in the browser's developer console. This error prevents blocks added to the editor from rendering and styling correctly, leading to a broken visual experience where blocks do not appear as expected or lose their intended styling.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://wordpress.org/patterns/new-pattern/'
2. Use the editor to add any blocks (e.g., Paragraph, Image, Columns).
3. Observe that the added blocks are not working as expected; their styling is incorrect or they fail to render properly.
4. Open the browser's developer console (usually by pressing F12 or right-clicking and selecting "Inspect" then navigating to the "Console" tab).
5. See the error message: Store "core/interface" is already registered. i@registry.js:220

Expected behavior
When using the WordPress Pattern Directory editor, blocks should render and apply their styling correctly without any console errors. The editing experience should be smooth, allowing users to accurately preview the pattern they are creating.

Screenshots
Windows - Edge Browser: https://share.zight.com/5zuk0xWP
Windows - Chrome: https://share.zight.com/eDupNq95
MacOS - Chrome: https://share.zight.com/7KulYOdz

Desktop (please complete the following information):

• OS: Windows 10/11, macOS (Latest versions)
• Browser: Chrome, Firefox, Edge
• Version: Latest stable versions (e.g., Chrome v138.0.7204.63 , Edge v138 as of July 2025)

[dd32]

Looks like #725 didn't fix this, it's fixed the warning, but the styles still aren't being loaded. FYI @gigitux

[gigitux]

Looks like #725 didn't fix this, it's fixed the warning, but the styles still aren't being loaded. FYI @gigitux

Yep, as I mentioned in the description, the PR fixes only the registration error. IMHO, we should invest our time into #719. Is there a slack channel to sync about this work?

[dd32]

@gigitux Ohh gotcha :) Sorry I wasn't fully insync.

We don't have a dedicated patterns team, nor slack channel.
Pattern Dev discussion can take place in #meta on W.org slack, and moderation/submission/etc questions occur via #themes

[gigitux]

No worries! I noticed that @ryelle is working on that PR. Please ping me here or on Slack if I can assist you.

[ryelle]

I really just rebased it, still need to figure out what the immediate next steps are. Happy to coordinate in #meta if you want to work on it together :)