When I try appending
?useskin=vector
to the Wikipedia URL
https://en.wikipedia.org/wiki/Lockwood_%26_Co._%28TV_series%29
or
https://en.wikipedia.org/wiki/Lockwood_&_Co._(TV_series)
it redirects to URL
https://en.wikipedia.org/wiki/Lockwood_&_Co._%20TV_series%20?useskin=vector#926991815450209430
changing parentheses to spaces causing the URL to fail, and appending a pound and some apparently long variable random number. If I then manually edit the spaces back to parenthesis codes %28 %29 while leaving the #N...N untouched then it works, but if I scrape off the #N...N then it fails again. Doesn't work with parenthesis characters ( ).
At least on Firefox.