The dropdown menu inside a sticky Bootstrap 5.3.8 header is being clipped when the header uses a custom overflow rule. It happens on desktop Chromium and Safari after the latest template update.

.app-header {
  position: sticky;
  top: 0;
  overflow: hidden;
}

Expected behavior: the dropdown should render above the page content without being clipped by the sticky header container.

Confirmed. This is caused by the header overflow rule, not by Bootstrap dropdown itself. The safest fix is to keep the header visible while moving the clipping behavior to a nested element that does not contain the dropdown.

A patch is queued for the forum and admin templates. If you need an immediate workaround, remove `overflow: hidden` from `.app-header` and apply clipping only to the brand/logo wrapper.

Tested the workaround in Safari 18 and Chrome 126. Dropdowns render correctly again, including nested menus inside the fixed header.