[Due for payment 2026-08-07] [$250] Agents - Multline system message from agent rule update is shown in multiple lines on LHN

[applause-bot]

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Version Number: 9.4.46-1
Reproducible in staging?: Yes
Reproducible in production?: N/A - new feature, doesn't exist in prod
If this was caught during regression testing, add the test name, ID and link from BrowserStack: #96773
Email or phone of affected tester (no customers): sdsjodijnsdojsosjio@gmail.com
Issue reported by: Applause Internal Team
Bug source: Exploratory - Significant User Experience Deterioration
Device used: Mac 26.5 / Chrome
App Component: Left Hand Navigation (LHN)

Action Performed:

Precondition:

• Enable Rules.

1. Go to staging.new.expensify.com
2. Go to workspace settings > Rules.
3. Click Add agent rule.
4. Select any suggested rule > Save.
5. Click on the created rule.
6. Add multiline description to the rule and save it.
7. Go to #admins room.
8. Click on the system message thread.
9. Wait for agent rule update system message to appear.

Expected Result:

Multline system message will be shown in one line on LHN.

Actual Result:

Multline system message from agent rule update is shown in multiple lines on LHN.

Workaround:

Unknown

Platforms:

• Android: App
• Android: mWeb Chrome
• iOS: App
• iOS: mWeb Safari
• iOS: mWeb Chrome
• Windows: Chrome
• MacOS: Chrome Safari

Screenshots/Videos

Bug7221350_1785363982059.16.mp4

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Applause Internal Information
Exported by: Vincenzo Godoy
Bug ID: 7221350

Upwork Automation - Do Not Edit

• Upwork Job URL: https://www.upwork.com/jobs/~022082671727310380983
• Upwork Job ID: 2082671727310380983
• Last Price Increase: 2026-07-30

Issue Owner

Current Issue Owner: @mkhutornyi

[melvin-bot]

You have been assigned to this deploy blocker because you recently merged this PR: #96773

[applause-bot]

While Applause doesn't embed attachments for this bug, here are the links for quick view:
https://platform.applause.com/services/links/v1/external/17c4e45ea81b3b10401030841d1007ca5c8712e044dd6920fadc97a923d92703

[melvin-bot]

@puneetlath @mkhutornyi you have been assigned to this deploy blocker because you reviewed the offending PR: #96773

[melvin-bot]

@yuwenmemon you have been assigned to this deploy blocker because you authored the offending PR: #96773

[melvin-bot]

💬 A slack conversation has been started in #expensify-open-source

[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.