Issue Summary

After a repo and associated pull requests are migrated to Bitbucket Cloud, line breaks do not always correctly render.

This is reproducible on Data Center: No

Steps to Reproduce

1. Create a repo
2. Create a second branch
3. Push a commit
4. Create a pull request with the following description

   Updated dependencies

   Changes included in this PR are as follows:
   1. Updated Express.js from version 4.17.1 to 4.17.2: This update includes security patches that are crucial to our application's stability. Additionally, it offers improved performance and fixes previously reported bugs.
   2. Upgraded Mongoose from version 5.12.3 to 5.13.8: This newer version provides additional features that we can leverage to improve our application's functionality. It also fixes several performance issues that were present in the older version.
   3. Updated Lodash from version 4.17.20 to 4.17.21: The update for this library primarily focuses on increasing the speed and efficiency of our application. The new version also has better compatibility with other updated libraries.
   4. Upgraded Moment.js from version 2.29.0 to 2.29.1: The decision to upgrade this library was driven by the need to stay up-to-date with the latest security patches and bug

   This will be stored as

   ### Updated dependencies\n\nChanges included in this PR are as follows:\n1. Updated Express.js from version 4.17.1 to 4.17.2: This update includes security patches that are crucial to our application's stability. Additionally, it offers improved performance and fixes previously reported bugs.\n2. Upgraded Mongoose from version 5.12.3 to 5.13.8: This newer version provides additional features that we can leverage to improve our application's functionality. It also fixes several performance issues that were present in the older version.\n3. Updated Lodash from version 4.17.20 to 4.17.21: The update for this library primarily focuses on increasing the speed and efficiency of our application. The new version also has better compatibility with other updated libraries.\n4. Upgraded Moment.js from version 2.29.0 to 2.29.1: The decision to upgrade this library was driven by the need to stay up-to-date with the latest security patches and bug
   

5. Migrate the repo to Bitbucket Cloud using Bitbucket Cloud Migration Assistant (BCMA)
6. Observe the pull request description

Expected Results

Line breaks render

Actual Results

Line breaks are ignored

Workaround

Manually edit all PR descriptions by:

• adding two spaces at the end of each line, or
• adding two new lines at the end of each block of text