The Issue with demo import with WP 6.1

[anarieldesign]

Description

When importing demo content using WP 6.1 styles are not imported correctly although the same works fine in WP 6.0.2.

Imported content displays the theme's default colors and styling instead of the styling set for that particular demo. However, in the "Site Editor" styles are correctly displayed. Sometimes when I exit the Site Editor the styles are then correctly displayed in the front end as well, but sometimes it takes a few tries.

This issue happens with the WordPress default importer as well as our theme's built-in import system.

Step-by-step reproduction instructions

1. install theme (I found this bug while checking our premium Basti theme with WordPress 6.1). If you need a theme file I can share it with you
2. import demo(style) version different from the default demo (style)
3. Imported content displays the theme's default colors and styling instead of the styling set for that particular demo -frontend
4. in the "Site Editor" styles are correctly displayed
5. when I exit the Site Editor the styles are then correctly displayed in the front end as well, but sometimes it takes a few tries or you need to wait for few minutes

Screenshots, screen recording, code snippet

Default WordPress Importer Video:

basti-default.mp4

Basti Demo Importer Video:

basti-importer.mp4

Environment info

• WordPress Version 6.1
• Gutenberg plugin is not installed

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

Is it possible to reproduce this with a default theme as well?

Same is happening with Twenty Twenty Two. I just installed the theme with WordPress 6.0 and choose the pink style variation. Exported the xml file. Installed 6.1 on the new installation, installed Twenty Twenty Two and imported xml file and same thing happens 🤷‍♀️

[annezazu]

cc @scruffian @carolinan @aristath you all in case any of you might be able to investigate this and come up with a possible solution for 6.1. This is definitely a point of concern for block themers for this release and it would be advantageous to have it solved sooner rather than later.

[dream-encode]

Is it possible to reproduce this with a default theme as well?

[anarieldesign]

Is it possible to reproduce this with a default theme as well?

Same is happening with Twenty Twenty Two. I just installed the theme with WordPress 6.0 and choose the pink style variation. Exported the xml file. Installed 6.1 on the new installation, installed Twenty Twenty Two and imported xml file and same thing happens

[scruffian]

cc @WordPress/block-themers

[t-hamano]

I think this issue is the same as #43914 and #43395.

[anarieldesign]

I think this issue is the same as #43914 and #43395.

Hi @t-hamano, I think it's not the same issue as this one is related to importing demo content, xml file. And when u import .xml file, front-end is not showing the right styles (u can wait and wait) till u click on the edit site and later wait for few minutes 🤷‍♀️🤷‍♀️. This is what happend when I did checks. With 6.0 this is not happening. U immidiately see the right styles on the front when u import the demo file. But maybe the same issue is causing both things 🤷‍♀️🤷‍♀️

[anarieldesign]

With 6.0, importing demo content with our Basti theme and default theme works perfectly and u can see styles immidiately applied on the front. In 6.1 it will not apply till u first click Edit Site 🤷‍♀️🤷‍♀️

[seothemes]

Hi @anarieldesign, I think transients could be causing the issue.

Commenting out line 431 of wp-includes/class-wp-theme-json-resolver.php fixes the issue for me.

The name is dynamic, but it should be possible to clear the transient on the after_import hooks in both Merlin and the WP Importer. I'll share what I come up with.

Hopefully there's a way to fix in core so the workaround isn't required.

[seothemes]

That's no longer working, maybe I was on an earlier 6.1 version. Not sure why it worked that time but I'll keep looking into it.