Before the v3.2.3 release, here’s a quick fix for the left sidebar bug and the sidebar menu issue.
Paste the following code in Appearance > Customize > Advanced Options > Custom CSS :
@media (max-width: 1200px) { li.on .sub-menu:before, li.current-menu-parent .sub-menu:before { content:none } .sub-menu { margin-left: inherit; top: inherit; position: inherit; width: inherit; } } @media (max-width: 979px) { .span3.left.tc-sidebar { display: block; } }