Items are rendenred incorrect when added manually

[Rod]

I've been testing the RibbonBar component as I'm planning to replace the one I use now with Telerik's. I followed the examples published but in none of them the items are added programmatically, as I do in my project. These items that were added via code are rendered incorrectly, making their visual bad.

I also tested with an older version of RibbonBar, one that doesn't have the new Application Menu yet, and the results were as expected. I'll attach screenshots from both versions, the ones named as "old" are correct and the "new" are incorrect.

Thanks in advance,
Rodrigo