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Bug on delete a tab

When i remove a tab with the method "removeTab(tab,mode)", the id of tab removed is not deleted in the collection "tabbar.tabsId"

How i can resolve this bug?

Problem confirmed and fixed, please use attached js file instead of original one ( if you are using pro version - please contact us directly at support@dhtmlx.com )

The problem persist... i set content to my tab (a div), create 2 or more tabs, and, when close one, my content (div) disappear and cause this error:

this._content[tab.idd].parentNode is null

removeTab()(div.dhx_tab_element, true)dhtmlxtabbar.js (linha 68)

_showHover()()dhtmlxtabbar.js (linha 72)

this._hideRowScroller(row)};dhtmlXTabBa...(row.tabCount==0)&&(this.rows.length>1))

The issue can't be reconstructed. 
Original fix , resolved situation with not removed ID from inner collections ( which has not any visible effects )
According to stack trace, while removing tab in your case, tabbar tries to select some sibling tab - but can't locate it correctly. 

Please check that each tab has unique ID.
If issue still occurs - please provide any kind of sample where issue can be reconstructed ( you can send it directly to support@dhtmlx.com ) 

The solution is create a div in runtime? How to i do it?

Instead of 
 <div id="objNewtab" style="display:none">
  Here is some content
 </div>
  a_tabbar.setContent(dt,content);
You can use 
  a_tabbar.setContentHTML(dt,"Here is some content");

Thanks. My solution (works):

function newTab() {
    var dt = new Date( ).valueOf();
    a_tabbar.enableTabCloseButton(true);
    a_tabbar.addTab(dt,'Newtab','200px',0,0);
    a_tabbar.setTabActive(dt, true);
    newDiv('obj'+dt);
    a_tabbar.setContent(dt,'obj'+dt);
}

function newDiv(id){
    if (document.createElement){
        var content = document.getElementById('alldivs');
        var divn = document.createElement('div');
        divn.setAttribute('type', 'div');
        divn.setAttribute('id', id);
        var divntext = document.createTextNode('Text here');
        divn.appendChild(divntext);
        content.appendChild(divn);
    }
}

Tks for all!