Status
Blocked on understanding the problem. See T187859#4054069 for details.
Description
Move Selenium test from 404080 from mediawiki/core to mediawiki/skins/Vector. The test is causing problems for other extensions and skins. See T185928 for more information.
The original commit (413157) caused problems for mediawiki/skins/MinervaNeue. See T188553 for more information. @Jdlrobson has reverted it (415393) until CI is fixed. The original commit is restored (but not merged) in 415614. See topic:T187859 for all commits.