Combo Width cannot set in Tabbar

Dear Support,

I put combo inside tabbar and set inputWidth for combo. But it did not work. If I put combo outside of tabbar, combo size changed according to inputWidth. Any idea why it happened? Below is sample code.

Please, try to update your dhtmlx version.
Your code works well with the latest versions of the dhtmlxSuite.

If the problem still actual please, provide a complete demo, where the problem can be reconstructed locally.