Collapsed left-side panel is broken
### Summary After merging https://gitlab.com/gitlab-org/gitlab/-/merge_requests/62486 we have a visual regression for the left-and panel n collapsed state. ### Steps to reproduce - open a list of issues in a project on gitlab.com - collapse the left-hand panel - watch the panel nopt fully collapsed with the sub-menu still being visible in the panel ### What is the current *bug* behavior? The panel doesn't get collapsed properly ### What is the expected *correct* behavior? The panel gets collapsed and no sub-items are permanently visible ### Relevant logs and/or screenshots | Before https://gitlab.com/gitlab-org/gitlab/-/merge_requests/62486 ([Commit: 6a5b7b00a78286127850a856334403db08e658c2](https://gitlab.com/gitlab-org/gitlab/-/commits/master?utf8=%E2%9C%93&search=Allow+%22Prev%22+and+%22Next%22+buttons+to+be+translated)) | After https://gitlab.com/gitlab-org/gitlab/-/merge_requests/62486 ([Commit: 7686659874efb64679316149413c122fc5bde9c6](https://gitlab.com/gitlab-org/gitlab/-/commits/master?utf8=%E2%9C%93&search=Merge+branch+%27ps-update-startup-css%27+into+%27master%27)) | | ------ | ------ | | ![Screenshot_2021-05-31_at_11.52.44](/uploads/fa380bd352ccbde81b7061d2deac6650/Screenshot_2021-05-31_at_11.52.44.png) | ![Screenshot_2021-05-31_at_11.57.20](/uploads/676e032e5d7544bc6a2c5f1165fdc7e0/Screenshot_2021-05-31_at_11.57.20.png) | ### Output of checks This bug happens on GitLab.com
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