Database List (DBList) Property displays checkbox instead of radio with 'Multiple select' option

To reproduce:

• Create a class A by adding a property B "Database List"
• In the property, check "Multiple select" and "Radio" (as display type) and save the class
• Create a page with an instance of the class A
• Edit the page in 'object' mode and look at the property B; there is checkboxes instead of radio buttons

I know it makes sense to display checkboxes when "Multiple select" is checked even if 'radio' has been selected. But in the user point of view, 'radio' has been selected. I don't know if it is possible to deactivate the 'Multiple select' checkbox if 'radio' has been selected or to hide 'radio' when 'Multiple select' has been checked.

A possible JIRA related to that (but on a very old version) is XWIKI-735.