From the parent issue, @andrewmacpherson said:
This should probably have some tests coverage for the behaviour, using WebDriverTestBase or Nightwatch. I'd like to get more keyboard behaviour tests into core; so far we don't have many, and simple components like this are a good place to start. There are some work-in-progress tests at #2940023: Improve accessibility of Umami's responsive main menu which has a very similar circumstances to the language menu here. A good next step would be to look at that, and see if we can get similar tests into both issues.
We should add nightwatch tests for Umami's drop down menus. See #2940023 for more information on what we might need to do for those tests.
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Comment #2
mogtofu33 commented