I am started using nop commerce 4.2 version, I saw one issue, downloaded 4.2 version from nop site. Installed started going through the site.
When I logged in to admin and click to the left menu it gets hanged for while I am not sure why it happening there is no console error as well.
CSS is not working in version 4.2. refer video:
The issue is with Chrome and IE browser ( I am having latest chrome version). There is no issue with firefox.