Created Unassigned: Tabcontainer tabs not wrapping [27822]

After upgrading to the 15.1 version, my tabs are not wrapping to the next line.

.ajax__tab_lightblue-theme {
margin-left: 0px;
overflow: visible;
}

.ajax__tab_lightblue-theme .ajax__tab_header {
font-family: arial,helvetica,clean,sans-serif;
font-size: small;
border-bottom: solid 2px gray;
overflow: visible;
white-space: normal;
}
.ajax__tab_lightblue-theme .ajax__tab_header .ajax__tab_outer {
background:url(images/lightblue.jpg) #d8d8d8 repeat-x; /* need to change to a standard grey */
padding:1px 0px 1px 0px;
vertical-align:bottom;
border:solid 1px #a3a3a3;
/*border-bottom-width:0px;*/
margin: 2px 0px 0px 0px;
border-radius: 0px 0px 0px 0px;

}
.ajax__tab_lightblue-theme .ajax__tab_header .ajax__tab_tab{
height: 8px;
font-size: 8pt;
color:#000;
padding:0.35em 0.75em;
margin-right:0.01em;
overflow: visible;

}
.ajax__tab_lightblue-theme .ajax__tab_hover .ajax__tab_outer {
background: url(images/lightblue.jpg) #bfdaff repeat-x left -1300px;
overflow: visible;
}

.ajax__tab_lightblue-theme .ajax__tab_active .ajax__tab_tab {
height: 9px;
font-size: 9pt;
color:#000;
white-space: nowrap;
overflow: visible;
}
.ajax__tab_lightblue-theme .ajax__tab_active .ajax__tab_outer {
background:url(images/lightblue.jpg) #ffffff repeat-x left -1400px;
margin-bottom: 0px;
white-space: nowrap;
border-radius: 0px 0px 0px 0px;
border-bottom: solid 4px black;
overflow: visible;
}
.ajax__tab_lightblue-theme .ajax__tab_body {
font-family: Arial, Helvetica, sans-serif;
font-size: 10pt;
/*padding:0.25em 0.5em;*/
background: #dedcd5;
overflow: visible;
}