Lighthouse, why does the desktop version open like it's mobile?

Question

Google Chrome

I recently updated Chrome and faced the fact that I can no longer check the site through LightHouse - in the Mobile version everything remains as it was, in the Desktop it opens with a small screen (but does not emulate the mobile version, as in mobile). The problem is not only with me, so reinstalling the browser will not help. I didn’t find the answer through Google, maybe someone came across and knows what to return the normal desktop version to or will it now be the norm for everyone and nothing can be done?