`ActionList.TrailingAction` does not fit `ActionList.Item` parent

[prichodko]

Description

The ActionList.TrailingAction component within ActionList.Item is causing a layout issue. Specifically, the underlying IconButton (32px) exceeds the available height of 20px, which causes unwanted expansion of the wrapping element..

---

Here's the current component structure:

  <ActionList.Item key={thread.id} onSelect={() => manager.selectThread(thread)}>
    <ActionList.LeadingVisual>
      <CommentIcon />
    </ActionList.LeadingVisual>
    {threadName(thread)}
    <ActionList.Description variant="inline">
      <RelativeTime date={new Date(Date.parse(thread.updatedAt))} format="relative" />
    </ActionList.Description>
    <ActionList.TrailingAction
      icon={TrashIcon}
      label={`Delete conversation: "${threadName(thread)}"`}
      onClick={async () => {}}
    />
  </ActionList.Item>

Steps to reproduce

https://codesandbox.io/p/sandbox/magical-zhukovsky-3wj36g

Looking at the reproduction, it also seems that TrailingAction is missing a hover state.

Version

v37.11.2

Browser

No response

[github-actions]

Uh oh! @prichodko, at least one image you shared is missing helpful alt text. Check your issue body to fix the following violations:

• Images should have meaningful alternative text (alt text) at line 5

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[langermank]

Hey @prichodko, are you seeing this bug in production or have you only tested this code locally? We have a feature flag staff shipped right now called primer_react_css_modules_staff that fixes this issue. Once that FF ships it will be fixed by default, but that is likely a few weeks away.

Could you try enabling that locally to see if the problem persists? We may need to do some CSS overrides to make it look right for production depending on how quickly you need this.

[prichodko]

@langermank – sorry for taking a while to answer, I was figuring out my entitlements.

Could you help me understand how I can tell if the primer_react_css_modules_staff FF is applied to my local environment?

I ran

bin/toggle-feature-flag enable primer_react_css_modules_staff

and noticed it is also enabled in the staff bar features dialog:

I tried disabling it in that dialog, but I still don't see any difference. I know this might be a general question for FFs, but I'm still figuring out how it works. 😅

[github-actions]

Uh oh! @prichodko, at least one image you shared is missing helpful alt text. Check #5668 (comment) to fix the following violations:

• Images should have meaningful alternative text (alt text) at line 11

Alt text is an invisible description that helps screen readers describe images to blind or low-vision users. If you are using markdown to display images, add your alt text inside the brackets of the markdown image.

Learn more about alt text at Basic writing and formatting syntax: images on GitHub Docs.

🤖 Beep boop! This comment was added automatically by github/accessibility-alt-text-bot.

[prichodko]

@langermank, I enabled the the FF locally and result is still the same:

The workaround is implemented here https://github.com/github/github/pull/361173/files.

[langermank]

Hey @prichodko I pulled your branch and refactored it to use ActionList.TrailingAction. With our feature flag enabled, it looks correct (as expected). I'm not sure why it looks broken for you, the steps you listed to enable it look correct.

That said, I think I would recommend not using it until this FF ships unless this particular feature is only staff shipped today. We're just a few weeks away. I'm happy to help refactor it later once TrailingAction looks correct!

[iansan5653]

This appears resolved now; I think it's safe to close it out. We can reopen if we spot it again.