Block Inserter: Animate inserter button icon to signal open state.#78306
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juanfra
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[Type] Enhancement
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Size Change: +649 B (+0.01%) Total Size: 7.98 MB 📦 View Changed
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Flaky tests detected in 0a5c318. 🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/26278899480
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t-hamano
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May 21, 2026
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t-hamano
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t-hamano
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Thanks for the PR. I like this new behavior, but let's get some design feedback.
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Nice one. Feels valid: if one inserter animates, and it does indeed close on a second click, no reason not to unify this. I assume this also touches the inserter that sits fixed-position in the bottom right corner of a container block, such as Row, yes? 
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Member
Author
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Thank you both! 🙌
Nice catch! It wasn't taking it because of how stylesheets load in the iframe. Moved it to the mixin so it applies everywhere. |
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Thank you :) |
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What?
Add animation to the inserter button to signal open state and improve ux. When the block inserter panel opens, the
+icon in the toggle button now rotates 45° into an×. Also wires up isPressed on the toggle, keeping it in sync with aria-expanded.Why?
The document tools inserter already does this, so this change follows that pattern. It's a small thing, but these tiny moments of feedback add up. The icon rotation gives you a clear visual cue that something is open and that clicking again will close it, without any extra UI.
How?
The CSS changes mirrors what's already in the document tools inserter, an SVG transition using the same
cubic-bezier easingand arotate(45deg)on.is-pressed.Testing Instructions
+)×.+.Testing Instructions for Keyboard
Screenshots or screencast
block-inserter-open-animation.mp4