I was testing the website https://analytics.wikimedia.org via latest versions of Safari and Chrome on iPhone 5s (iOS 12.4.8) and iPadOS 14.1 (latest version of supported iPads). Seems that, on iOS version of Safari, the website's UI would not respond to touch screens' interactions with collapsed tabs, "Download" and "Dashboard". Nonetheless, I can still tap on the "Contact" tab, which is not collapsible.

Split from T266071