If I go to https://en.m.wikipedia.org/wiki/Main_Page and select "Random" from the hamburger drop-down menu in the top-left corner of the page, I'm sent to https://en.m.wikipedia.org/w/index.php?title=USS_Peacock&campaign=random.
This URL should not include "/w/index.php?title=" and should not include "&campaign=random". The desktop site includes neither of these.
Wrong: https://en.m.wikipedia.org/w/index.php?title=USS_Peacock&campaign=random
Right: https://en.m.wikipedia.org/wiki/USS_Peacock
Version: unspecified
Severity: normal