Unit test issue with css `min-height`

Original MR:

https://gitlab.com/gitlab-jh/gitlab/-/merge_requests/69

Description

We have a issue that require us to add a new partial into _page.html.haml. Based on this Add JH global footer.

And I added this partial in Add must have links into JH.

With this line of code commented, the pipeline will pass.

So I tried run the test locally, with command below:

spec: spec/features/groups/settings/packages_and_registries_spec.rb

example name: 'shows an error on wrong regex'

Running command WEBDRIVER_HEADLESS=0 bundle exec rspec spec/features/groups/settings/packages_and_registries_spec.rb -e 'shows an error on wrong regex'

Everything seemed right when running locally.

cc @wortschi @leipert, I have no idea what is causing the issue, would you please help me on this?