Source evidence

Block apiVersion

Post Grid Gutenberg Blocks – PostX · support · 2026-06-04T06:25:00+00:00

Post Grid Gutenberg Blocks – PostX plugin evidence original source source API

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lowseverity

0.44relevance

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Conversation

support

lofesa resolved

Hi. In the dev tools console panel there are some warnings about the apiVersion in some of your blocks. For example: Block with API version 2 or lower is deprecated since version 6.9. See: https://developer.wordpress.org/block-editor/reference-guides/block-api/block-api-versions/block-migration-for-iframe-editor-compatibility/ Note: The block “ultimate-post/row” is registered with API version 1. This means that the post editor may work as a non-iframe editor. Since all editors are planned to work as iframes in the future, set the apiVersion field to 3 and test the block inside the iframe editor. Sorry, I forgot this one too. Maybe related to the issue in the 1st post: ultp-blocks-editor-css-css was added to the iframe incorrectly. Please use block.json or enqueue_block_assets to add styles to the iframe.<link id=”ultp-blocks-editor-css-css” rel=”stylesheet” href=” https://desarrollo.inter…ks.editor.css?ver=5.0.22 ” media=”all”> ultp-style-css was added to the iframe incorrectly. Please use block.json or enqueue_block_assets to add styles to the iframe.<link id=”ultp-style-css” rel=”stylesheet” href=” https://desarrollo.inter…style.min.css?ver=5.0.22 ” media=”all”> Hi @lofesa , Thank you for reporting this. Our development team is already working on updating the Row block to API version 3. The fix will be included in next week’s plugin release. We appreciate your feedback and patience. This reply was modified 1 hour, 6 minutes ago by Razibul Hasan .

Commercial Context

Opportunity

agency visual QA and update safety

Gutenberg visual QA and update safety for preventing client-site regressions before updates or edits go live

Buyer: site builders and agencies

Wedge: detect gutenberg layout regressions, widget breakage, and client-visible update issues

Proof Blocked card complete market

Analysis

codex:gpt-5.5

Summary: The user reported Ultimate Post block API and iframe stylesheet warnings, and the vendor said a fix was planned for the next release.

Evidence quote: there are some warnings about the apiVersion in some of your blocks.

Affected feature: block API version

compatibility block API version

Plugin

API

Post Grid Gutenberg Blocks – PostX

40.0K active installs · 3.0M downloads · rating 96.0

blog grid grid gutenberg gutenberg blocks post grid

Comments

2 shown

lofesa 2026-06-04T06:41:00+00:00

Sorry, I forgot this one too. Maybe related to the issue in the 1st post: ultp-blocks-editor-css-css was added to the iframe incorrectly. Please use block.json or enqueue_block_assets to add styles to the iframe.<link id=”ultp-blocks-editor-css-css” rel=”stylesheet” href=” https://desarrollo.inter…ks.editor.css?ver=5.0.22 ” media=”all”> ultp-style-css was added to the iframe incorrectly. Please use block.json or enqueue_block_assets to add styles to the iframe.<link id=”ultp-style-css” rel=”stylesheet” href=” https://desarrollo.inter…style.min.css?ver=5.0.22 ” media=”all”>

Razibul Hasan 2026-06-04T10:06:00+00:00

Hi @lofesa , Thank you for reporting this. Our development team is already working on updating the Row block to API version 3. The fix will be included in next week’s plugin release. We appreciate your feedback and patience. This reply was modified 1 hour, 6 minutes ago by Razibul Hasan .