Cursor jumps back on Multi-Line Text Fields using legacy MS Edge

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.2.X
• Fix Version/s: 7.2.10 DXP FP10, 7.2.10.4 DXP SP4, 7.2.X
• Component/s: Forms
• Labels:
  • 7.2.x-only
  • ee-ts
  • liferay-dxp-72-sp4
  • liferay-fixpack-dxp-10-7210
• Branch Version/s:
  7.2.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Sprint: Forms_7.4_06
• Git Pull Request: https://github.com/liferay/liferay-portal-ee/pull/22163

Steps to Reproduce:
1) Start Liferay DXP 7.2
2) Create a new Form with a Text Element with a multi-line text area; Publish
3) Add a Form widget to a site page and select the new form created in Step 2
4) Using a Microsoft Edge browser (pre-Chromium version), start typing into the multi-line text field

Expected Results:
Typed words will be spelled out correctly, from left to right

Actual Results:
Typed words/characters are in reverse order (see movie GIF demo of behavior attached: MSEdge_Forms_Test.gif )

7.2.x: Reproduced (71b4ce3ebb3c7a8363582d9af3f8cc69afc7479c)
Master: Did not Reproduce (6265d795b50b5e686e73d7e967d8d3283be2e792)

Notes:
1. On 7.2.x, if words/characters are typed fast, this issue doesn’t happen. But if typed slowly, then the cursor jumps back to the far left position and results in the typed order being reversed
2. Customer reported that this issue is occurring using MS Edge version 44.17763.1.0 or any Edge build prior to Chromium introduction (version 79+)
3. This issue is not reproduced on Chrome, Firefox, or IE11