Mark down - Position of text with header and line changes after collapsing the composer

[kbecciv]

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Version Number: 1.4.58-0
Reproducible in staging?: y
Reproducible in production?: n
Issue found when executing PR: #38152
Issue reported by: Applause - Internal Team

Action Performed:

1. Go to staging.new.expensify.com
2. Go to chat.
3. Type # header.
4. Hit Enter to create a new line.
5. Note the position of text in the composer.
6. Expand the composer.
7. Collapse the composer.

Expected Result:

The position of text in the composer after expanding and collapsing the composer should be the same as the position before expanding the composer.

Actual Result:

After expanding and collapsing the composer, the text in the composer becomes top-aligned.

Workaround:

n/a

Platforms:

Which of our officially supported platforms is this issue occurring on?

• Android: Native
• Android: mWeb Chrome
• iOS: Native
• iOS: mWeb Safari
• MacOS: Chrome / Safari
• MacOS: Desktop

Screenshots/Videos

Add any screenshot/video evidence

Bug6431691_1711724537587.20240329_225653.mp4

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[melvin-bot]

Triggered auto assignment to @hayata-suenaga (DeployBlockerCash), see https://stackoverflowteams.com/c/expensify/questions/9980/ for more details.

[kbecciv]

We think that this bug might be related to #vip-vsb

[github-actions]

👋 Friendly reminder that deploy blockers are time-sensitive ⏱ issues! Check out the open `StagingDeployCash` deploy checklist to see the list of PRs included in this release, then work quickly to do one of the following:

1. Identify the pull request that introduced this issue and revert it.
2. Find someone who can quickly fix the issue.
3. Fix the issue yourself.

[hayata-suenaga]

I don't believe this is a bug 😄 The added header is the first line of the text. It should remain so even when the composer is expanded.