Issue Summary

• Some content which only have a single line break, get an extra "<br />" tag added when we enter into edit in the legacy editor.

Steps to Reproduce

1. Create a new legacy editor page.
2. Publish the page with this storage format.

   • <p><span style="color: rgb(51,51,51);">Lorem is not lorem.</span>
     <br style="text-align: left;" /><br />
     <span style="color: rgb(51,51,51);">Lorem is ipsum.</span></p>
     

3. Notice there's only a single line break.
   • 
4. Edit the page, and notice an extra line break added automatically.
   • 
5. Without making any changes, publish the page and notice the extra line break added to the page as well.

   • <p><span style="color: rgb(51,51,51);">Lorem is not lorem.</span>
     <br style="text-align: left;" /><br /><br />
     <span style="color: rgb(51,51,51);">Lorem is ipsum.</span></p>

Expected Results

• Simply editing a page should not add any extra content or line breaks.

Actual Results

• Editing a page causes an extra "<br />" tag to be added.

Workaround

• Edit the page, and copy and paste the text into a text editor.
• Remove the extra line in the text editor and paste the text back in.
  • This should clear the problematic HTML/CSS that's triggering the issue.