In Microsoft Edge browser, users are unable to use the arrow buttons in the keyboard to navigate through certain HTML contents

Build information:
Affected Builds: London Patch 4 Hotfix 2

Issue Description:
In Microsoft Edge browser, users are unable to use the arrow buttons in the keyboard to navigate through certain HTML contents

 

1. Open a new catalog item record by going to sc_cat_item.do
2. Fill in all the mandatory fields
3. Paste the following text in the "Description" field within the Source Code editor -
<p>Test 1 <br /><br /></p>
<p>Test 2</p>
4. Save the record
5. Click between the "T" and "E" of "Test 1" then press the Down Arrow button on your keyboard

Expected behavior
The cursor should move to the next line

Actual behavior
The cursor moves to the end of the current line and refuses to move any further using the "Down Arrow" button

If you try this in Chrome, Firefox or IE11 it works fine

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