1) Go to My Sites and select Global (site) > Content & Data > Web Content > Structures and copy the Basic Web Content renaming it to "Basic Web Content 2"
2) Select and edit the new structure to make the HTML field repeatable
3) Create a Web Content with the new structure introducing at least two values for Content field.
4) Try to click on the first field to edit the content
Results of Testing
Expected Result: I'm able to edit any field
Actual Result: I'm able to edit first field, only the last HTML field in the content
Note: works fine with "liferay-ckeditor": "4.13.1-liferay.5"