VM template custom field problem

Hello,
when a try to insert a custom field in a VM product i got an unexpected button radio (img attached).

Any solution?

Thanks in advance
M.

Could you check whether the same happen on default Joomla! template like Beez ?

Yes the same with Beez5

So it means that it is VirtueMart issue not template problem. Please contact with VM support because as others 3rd party extensions VirtueMart is also beyond our support.