OOUI dialogs with tabs can't be interacted with (except the last tab), e.g. VE image dialog. Spotted by @Whatamidoing-WMF.
You can't click any buttons or select text.
This only affects browsers that support hidden="until-found" (which allows the browser's Ctrl+F search to find text in hidden tabs and switch to them), which is basically only recent versions of Chrome: https://caniuse.com/mdn-html_global_attributes_hidden_until-found_value
- "Indexed dialog (tab navigation)" on https://doc.wikimedia.org/oojs-ui/master/demos/?page=dialogs&theme=wikimediaui&direction=ltr&platform=desktop
- VE image dialog (Insert → Images and media)