Sometimes when I click on a program menu option, which is actually a link to the WEB page and not an option as such, it opens to me such option in KWrite as text containing the source of the WEB page, not as a WEB page itsefl.
An example is the latest version of the NextCloud client. It only happens on one computer, it is OK on the others.
So I broke something. What do I need to check/correct? Any idea?