@dgt41

@neo191987 Is this on Isis or on a front end template?
If it's front end please ask for an update from the vendor or your designer (should straight forward fix)
If it's back end probably the component has some conflicting css, again ask the vendor for an update

Hi this problem is also present at the front and at the back end.
front end - isis
back end - Helix3

@neo191987 what browser?
which views?
what happens if you disable the helix plugin ?

front end - isis
back end - Helix3

I assume yuo meant the other way around

Disable: Helix3 - Ajax and System - Helix3 Framework
Same problem. I went wrong :)

@neo191987 what browser are you using?
Did you tried with another one?
Also which views produce this error?

Google Chrome - Latest Version. I will now test others.

Mozilla Firefox and Opera - same problem. Testing Hikashop.

Editing an article the calendar displays correctly ? If so please close the issue here and open one in Hikashop

Yes there works perfectly, but I tested most applications have this problem.

I had this problem to, it happens when call:

echo JHtml::_('calendar', $value, $name, $id, $format, $attributes);

and $attributes do not have some values, wich expected by new version of JHtml::calendar

I would count it as B/C problem