Title: Load Combined Core Block Assets Author: Weston Ruter Published: December 8, 2025 Last modified: December 8, 2025 --- Search plugins ![](https://ps.w.org/load-combined-core-block-assets/assets/icon.svg?rev=3413800) # Load Combined Core Block Assets By [Weston Ruter](https://profiles.wordpress.org/westonruter/) [Download](https://downloads.wordpress.org/plugin/load-combined-core-block-assets.1.0.0.zip) * [Details](https://test.wordpress.org/plugins/load-combined-core-block-assets/#description) * [Reviews](https://test.wordpress.org/plugins/load-combined-core-block-assets/#reviews) * [Installation](https://test.wordpress.org/plugins/load-combined-core-block-assets/#installation) * [Development](https://test.wordpress.org/plugins/load-combined-core-block-assets/#developers) [Support](https://wordpress.org/support/plugin/load-combined-core-block-assets/) ## Description This is a temporary workaround for sites experiencing any issues with WordPress 6.9’s new ability to [load block styles on demand in classic themes](https://make.wordpress.org/core/2025/11/18/wordpress-6-9-frontend-performance-field-guide/#load-block-styles-on-demand-in-classic-themes), for example [#64354](https://core.trac.wordpress.org/ticket/64354). If running a classic theme (i.e. not a block theme), it filters `should_load_separate_core_block_assets` to be `false`. This has the effect of reverting a change introduced in 6.9 where classic themes now load separate core block assets on demand by default. Note that this plugin should be considered temporary until any issues are resolved in 6.9.1. At any time, you can test whether any issues remain by adding `?should_load_separate_core_block_assets =true` to any frontend URL; this restores the default behavior in WP 6.9. This workaround is temporary because there are performance benefits to loading separate core block assets. They can be loaded on demand just when they are used, as opposed to loading the large single combined `wp-block-library` stylesheet. Loading separate block styles on demand reduces the amount of CSS which should improve page load time. ## Installation #### Automatic 1. Visit **Plugins > Add New** in the WordPress Admin. 2. Search for **Load Combined Core Block Assets**. 3. Install and activate the **Load Combined Core Block Assets** plugin. You may also install and update via [Git Updater](https://git-updater.com/) using the [plugin’s GitHub URL](https://github.com/westonruter/load-combined-core-block-assets). #### Manual 1. Download the plugin ZIP either [from WordPress.org](https://downloads.wordpress.org/plugin/load-combined-core-block-assets.zip) or [from GitHub](https://github.com/westonruter/load-combined-core-block-assets/archive/refs/heads/main.zip). Alternatively, if you have a local clone of the repo, run `npm run plugin-zip`. 2. Visit **Plugins > Add New Plugin** in the WordPress Admin. 3. Click **Upload Plugin**. 4. Select the `load-combined-core-block-assets.zip` file on your system from step 1 and click **Install Now**. 5. Click the **Activate Plugin** button. ## Reviews ![](https://secure.gravatar.com/avatar/68fbe7ff9342869953e6460a59474f85c1ed7e816070a529bccb68eeed57cac4? s=60&d=retro&r=g) ### 󠀁[Great plugin, issue still not resolved in 6.9.1](https://wordpress.org/support/topic/great-plugin-issue-still-not-resolved-in-6-9-1/)󠁿 [tlgtimeshare](https://profiles.wordpress.org/tlgtimeshare/) February 10, 2026 2 replies This workaround fixed the issue on my site, kudos to the developer. However, even after 6.9.1 the issue is not resolved without this plugin. Other users report the same, so now not sure how to get a permanent resolution. Surely, WordPress are aware of this?! ![](https://secure.gravatar.com/avatar/50e5c6d494e8ad9f915ed5b20829a5426b8185aa7b9d2014b9c8087494fafc51? s=60&d=retro&r=g) ### 󠀁[This really helped!](https://wordpress.org/support/topic/this-really-helped/)󠁿 [Senri Miura](https://profiles.wordpress.org/senribb/) February 6, 2026 My website, which was broken due to WordPress 6.9, has now been restored. I’m very grateful to the author. ![](https://secure.gravatar.com/avatar/b7a83d040c462233919dc913adbab903de41af3b1bbdf232a838ed849c232da1? s=60&d=retro&r=g) ### 󠀁[Saved my layout!](https://wordpress.org/support/topic/saved-my-layout/)󠁿 [CultTVman](https://profiles.wordpress.org/culttvman/) December 17, 2025 Thanks for this workaround! Fixed my site! Steve ![](https://secure.gravatar.com/avatar/5c1fc26c303cfcc59bf038c364cc1d485581cfda13b3f151d35b3b7e974a70e8? s=60&d=retro&r=g) ### 󠀁[Works on Genesis sites](https://wordpress.org/support/topic/works-on-genesis-sites/)󠁿 [driven to design](https://profiles.wordpress.org/driven-to-design/) December 15, 2025 Confirming this fixes layouts broken due to WP 6.9 update on several sites running Genesis with Mai Lifestyle Pro. Thanks! ![](https://secure.gravatar.com/avatar/a4ba14442e9bc8ce267a19dafd4485b71de175f722e194bfeb93eea50bc33e06? s=60&d=retro&r=g) ### 󠀁[Fixed broken layouts after upgrading to WordPress 6.9](https://wordpress.org/support/topic/fixed-broken-layouts-after-upgrading-to-wordpress-6-9/)󠁿 [chrisandrew](https://profiles.wordpress.org/chrisandrew/) December 15, 2025 We built and maintain a hybrid classic/headless WordPress website for a national client. A number of our frontend components (CoreButton, CoreMediaText, etc.) tap into WordPress core editor classnames, props, and critically, CSS rulesets, to provide our client the flexibility they expect when editing blocks and posts.After updating to WordPress 6.9, these components failed to render as expected. Our investigation led us to the post on wordpress-6-9-hotfixes, and subsequently, this plugin. Thankfully, installing this plugin resolved the issue.Thanks to @westonruter for taking the time to publish this hot-fix. ![](https://secure.gravatar.com/avatar/81604bc8917eef05719b8ba7dafcc600d2d2eb2cc1185eb7e7b31de98021db4c? s=60&d=retro&r=g) ### 󠀁[Little Life Saver!](https://wordpress.org/support/topic/little-life-saver-3/)󠁿 [Erik Molenaar](https://profiles.wordpress.org/erikmolenaar/) December 10, 2025 This little plugin is a life saver for anyone running classic themes on WordPress 6.9+. In my case it instantly fixed broken layouts caused by the new “block styles on demand” system clashing with a 3rd party WooCommerce plugin on a Genesis site. If your front end suddenly looks off after updating to WordPress 6.9, install this first before you start tearing your frontend apart! [ Read all 6 reviews ](https://wordpress.org/support/plugin/load-combined-core-block-assets/reviews/) ## Contributors & Developers “Load Combined Core Block Assets” is open source software. The following people have contributed to this plugin. Contributors * [ Weston Ruter ](https://profiles.wordpress.org/westonruter/) “Load Combined Core Block Assets” has been translated into 2 locales. Thank you to [the translators](https://translate.wordpress.org/projects/wp-plugins/load-combined-core-block-assets/contributors) for their contributions. [Translate “Load Combined Core Block Assets” into your language.](https://translate.wordpress.org/projects/wp-plugins/load-combined-core-block-assets) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/load-combined-core-block-assets/), check out the [SVN repository](https://plugins.svn.wordpress.org/load-combined-core-block-assets/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/load-combined-core-block-assets/) by [RSS](https://plugins.trac.wordpress.org/log/load-combined-core-block-assets/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.0.0 * Escape translated message in HTML comment for extra hardening. #### 0.1.0 * Initial release. ## Community plugin This plugin is developed and supported by a community. [Contribute to this plugin](https://github.com/westonruter/load-combined-core-block-assets) ## Meta * Version **1.0.0** * Last updated **5 months ago** * Active installations **1,000+** * WordPress version ** 6.9 or higher ** * Tested up to **6.9.4** * PHP version ** 7.2 or higher ** * Languages * [English (US)](https://wordpress.org/plugins/load-combined-core-block-assets/), [Japanese](https://ja.wordpress.org/plugins/load-combined-core-block-assets/), and [Russian](https://ru.wordpress.org/plugins/load-combined-core-block-assets/). * [Translate into your language](https://translate.wordpress.org/projects/wp-plugins/load-combined-core-block-assets) * Tag * [performance](https://test.wordpress.org/plugins/tags/performance/) * [Advanced View](https://test.wordpress.org/plugins/load-combined-core-block-assets/advanced/) ## Ratings 5 out of 5 stars. * [ 6 5-star reviews ](https://wordpress.org/support/plugin/load-combined-core-block-assets/reviews/?filter=5) * [ 0 4-star reviews ](https://wordpress.org/support/plugin/load-combined-core-block-assets/reviews/?filter=4) * [ 0 3-star reviews ](https://wordpress.org/support/plugin/load-combined-core-block-assets/reviews/?filter=3) * [ 0 2-star reviews ](https://wordpress.org/support/plugin/load-combined-core-block-assets/reviews/?filter=2) * [ 0 1-star reviews ](https://wordpress.org/support/plugin/load-combined-core-block-assets/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/load-combined-core-block-assets/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/load-combined-core-block-assets/reviews/) ## Contributors * [ Weston Ruter ](https://profiles.wordpress.org/westonruter/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/load-combined-core-block-assets/)