# Wagtail 2.16.1 release notes

*February 11, 2022*

> * [What’s new](#what-s-new)

## What’s new

### Bug fixes

> * Ensure that correct sidebar submenus open when labels use non-Latin alphabets (Matt Westcott)
> * Fix issue where invalid bulk action URLs would incorrectly trigger a server error (500) instead of a valid not found (404) (Ihor Marhitych)
> * Fix issue where bulk actions would not work for object IDs greater than 999 when `USE_THOUSAND_SEPARATOR` (Dennis McGregor)
> * Set cookie for sidebar collapsed state to “SameSite: lax” (LB (Ben Johnston))
> * Prevent error on creating automatic redirects for sites with non-standard ports (Matt Westcott)
> * Restore ability to customize admin UI colors via CSS (LB (Ben Johnston))