Can't add an Answer with IE11, also can't see the answers added with other browsers in edit mode

Preconditions: Have the FAQ Application 8.3 installed.

Steps to reproduce:

1. Access the FAQ app with IE11
2. Add a new question
3. Add an answer
4. Save & View the page
5. Edit the new question or create another one with other browsers (Chrome, Edge, FF)
6. Add an answer
7. Access question with IE
8. Edit the question

Expected results: The user is allowed to create a new Question/Answer entry.

Actual results:

• Step 3: Answer can't be added with IE 11. The cursor doesn't appear at all in the text box.
• Step 8: Answers added with other browsers is not visible with IE11 in Edit mode.

This reproduces on XWiki 11.10.4 and 12.2.1

 
Working fine on XWiki 11.10.3