Ribbon checkbox not showing correct from json

Hi,

I have some strange issue with Ribbon and Multi Combo.

After loading loading Ribbon:

this.Ribbon.loadStruct('Ribbon',function() { ... });

Self Ribbon output with Combo looks like:

Screenshot_13

I’m trying to load Combo items inside Ribbon callback:

var Combo = self.Ribbon.getCombo('type_combo');
Combo.load('ComboType/','json')

Combo items output looks like:

Everything looks like everything seems normal, but checkbox is not showing, is added into html, but added as text, not html element.

Screenshot_15

Have no idea what I’m doing wrong. json structure for Ribbon and Combo looks like normal. Even checked with example json, but just don’t work. Self Multi Combo works, everything fine, but only something wrong with checkbox

Screenshot_16

We are using dhtml 5.0 pro

Unfortuiantely the problem cannot be reproduced locally.
Please, refer to the attached snippet:
http://snippet.dhtmlx.com/f755dc71a
It works well for me locally.
If the porblem still occurs for you please, provide a similar snippet, complete demo or a demo link, where the problem can be reproduced locally.