Simple Date Picker Not Working

-- HikaShop version -- : 2,5,0
-- Joomla version -- : 3.4.3
-- PHP version -- : 5.4.3
-- Browser(s) name and version -- : All
-- Error-message(debug-mod must be tuned on) -- : Uncaught TypeError:
Cannot read property 'length' of nullDate.print @ calendar.js:1
Calendar.callHandler @ calendar.js:1
Calendar.cellClick @ calendar.js:1
Calendar.tableMouseUp @ calendar.js:1

Replicate Error
1. Create new custom field for order table, using simple date picker
2. Save and publish to frontend
3. Frontend date picker on checkout page have no function with above error in console
4. Backend date picker in editing custom field have no function with above error in console

Hi,

The simple date picker cannot work with a custom date format on Joomla 3.x as it uses the Joomla calendar library which doesn't support that capability anymore.
So please use the advanced date picker instead.

Updated to J3.5.1 Hikashop 2..6.3 and change in Display -> Custom fields Simple to Advanced data picker.
But it don't support cyrillic chars? Strange symbols instead text.

Hi,

Could you provide a link to the page with the issue ?

Hi
Date support in joomla is really a MESS , i ask many questions and create many posts about date support and filter range and date format ....
Good luck