Ooleg_king2May 6, 2021
If you make two-level tabs, with ".tabs-bb" at high level and just a ".tabs" inside one of high-level panels - you will get wrong active pills height in inner tabs - 44px instead of 40px. You can see wrong height here: https://prnt.sc/12k0sht
'.tabs-bb .tab-nav li.ui-tabs-active a' style from styles.css works for both high-level pills (which is right) and for all pills in tabs inside high-level panels (which is wrong).
jQuery UI Tabs requires both pills and panels to be inside one container, but sometimes you have to insert something between '.tabs' and 'ui.tab-nav' (if you want AJAX and do not want panels to be inserted just below of pills), so we cannot just use '>' CSS selector in this case.
Just a bug report.