Hi @ArielLow2146 , @Sabra-FRC , @KenBouchard
I was experiencing something similar on my laptop (getting mobile views when my screen resolution was way over 600px tall as @DavidNyenhuis1 mentioned). When I would screen shot the viewable area of the browser/dashboard it would show the resolution was viewable area (with bookmark bar etc.) was 1915x857. Perplexed...
So in Windows 11 on my trusty Dell, I changed the scale from 150% recommended setting) to the 125% (see below). The setting is found under System -> Display -> Scale & Layout. For me, this solved the problem and I began receiving the desktop version of the dashboard as soon as I reloaded it in the browser.
If others find this to be the problem, hopefully the user's scale selection is something which the Esri wizardry could detect and perhaps account for when determining which interface to serve. But for end user support, the parameterized solution (#view=desktop) or changing display scale may help. I was also thinking about putting the link in the dashboard bookmarks for others encountering this. Something like "Force desktop view" with a link to the parameterized URL that @JohannesLindner mentioned.
Hope this helps,
Tim