The start timer doesn't appear in GitLab issue pages. I already chatted with the AI Bot, did everything it suggested and more (tried several versions of the browser extensions, checked the console logs etc.), except for changing the GitLab Navigation style to older version (couldn't find the option in GitLab Profile Preferences) and finding the class named issue-details-title in the DOM. Still not working, neither in Firefox, nor in Chrome/Chromium. Check this out for more details https://support.tmetric.com/portal/en/ticket/85110000028868001.