fix(ui): smooth border-radius transition on collapsible close by JarrodMFlesch · Pull Request #16431 · payloadcms/payload

JarrodMFlesch · 2026-04-30T12:14:00Z

Summary

When collapsing an array/blocks row, the bottom border-radius on the header would snap to rounded immediately while the content was still animating closed—creating a jarring visual disconnect between the header and the disappearing content below it.

This adds a CSS keyframe animation that waits for the content to finish collapsing (300ms), then smoothly eases the corners to rounded over 150ms. The animation-fill-mode: both ensures the corners stay flat during the delay period. Opening remains instant so the header connects seamlessly with the expanding content.

Before

CleanShot.2026-04-30.at.08.49.37.mp4

After

CleanShot.2026-04-30.at.08.50.43.mp4

Adds a delayed CSS animation for the bottom border-radius when collapsing so the corners round smoothly after the content finishes animating closed, instead of snapping immediately.

github-actions · 2026-04-30T12:23:25Z

📦 esbuild Bundle Analysis for payload

This analysis was generated by esbuild-bundle-analyzer. 🤖

Meta File	Out File	Size (raw)	Note
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packages/payload/meta_index.json	esbuild/index.js	1.39 MB	🆕 Added
packages/payload/meta_shared.json	esbuild/exports/shared.js	191.30 KB	🆕 Added
packages/richtext-lexical/meta_client.json	esbuild/exports/client_optimized/index.js	287.18 KB	🆕 Added
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Details

Next to the size is how much the size has increased or decreased compared with the base branch of this PR.

‼️: Size increased by 20% or more. Special attention should be given to this.
⚠️: Size increased in acceptable range (lower than 20%).
✅: No change or even downsized.
🗑️: The out file is deleted: not found in base branch.
🆕: The out file is newly found: will be added to base branch.

fix(ui): smooth border-radius transition on collapsible close

cef6ff5

Adds a delayed CSS animation for the bottom border-radius when collapsing so the corners round smoothly after the content finishes animating closed, instead of snapping immediately.

JarrodMFlesch requested review from AlessioGr and jacobsfletch as code owners April 30, 2026 12:14

github-actions Bot added the created-by: Payload team label Apr 30, 2026

JessRynkar self-requested a review April 30, 2026 13:04

JessRynkar approved these changes Apr 30, 2026

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JessRynkar merged commit 5481602 into main Apr 30, 2026
332 of 335 checks passed

JessRynkar deleted the fix/collapsible-border-radius-animation branch April 30, 2026 13:04

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fix(ui): smooth border-radius transition on collapsible close#16431

fix(ui): smooth border-radius transition on collapsible close#16431
JessRynkar merged 1 commit intomainfrom
fix/collapsible-border-radius-animation

JarrodMFlesch commented Apr 30, 2026 •

edited

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github-actions Bot commented Apr 30, 2026

Meta file: packages/next/meta_index.json, Out file: esbuild/index.js

Meta file: packages/payload/meta_index.json, Out file: esbuild/index.js

Meta file: packages/payload/meta_shared.json, Out file: esbuild/exports/shared.js

Meta file: packages/richtext-lexical/meta_client.json, Out file: esbuild/exports/client_optimized/index.js

Meta file: packages/ui/meta_client.json, Out file: esbuild/exports/client_optimized/index.js

Meta file: packages/ui/meta_shared.json, Out file: esbuild/exports/shared_optimized/index.js

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JarrodMFlesch commented Apr 30, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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github-actions Bot commented Apr 30, 2026

📦 esbuild Bundle Analysis for payload

Meta file: packages/next/meta_index.json, Out file: esbuild/index.js

Meta file: packages/payload/meta_index.json, Out file: esbuild/index.js

Meta file: packages/payload/meta_shared.json, Out file: esbuild/exports/shared.js

Meta file: packages/richtext-lexical/meta_client.json, Out file: esbuild/exports/client_optimized/index.js

Meta file: packages/ui/meta_client.json, Out file: esbuild/exports/client_optimized/index.js

Meta file: packages/ui/meta_shared.json, Out file: esbuild/exports/shared_optimized/index.js

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JarrodMFlesch commented Apr 30, 2026 •

edited

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