Version conflict appears when saving a page on IE 11

Steps to reproduce:

1. Log in as Admin or simple user with IE 11
2. Access the Home page
3. Click on Edit
4. Add/remove some text with the new in-place editor
5. Save & View the page or Save

Expected results: The page is saved.

Actual results: After each Save & View / Save the "Version conflict" message appears.

Video: https://up1.xwikisas.com/#q2VAjonyetdDkIH9L0wnRA

Note: On Chrome, Firefox and Edge it is working properly.