Issues are not searchable

Problem

GitLab issues are not searchable with Google 😞 So many users search with Google for a specific bug of our app, but they find nothing... But this bug is tracked as a ticket.

Our repo (Sharezone): https://gitlab.com/codingbrain/sharezone/sharezone-app (+450 public tickets)

If you search for sharezone site:gitlab.com in Google, you get only 9 reults

Link: https://www.google.com/search?q=sharezone+site%3Agitlab.com&oq=sharezone+site%3Agitlab.com&aqs=chrome.0.69i59.6615j0j4&sourceid=chrome&ie=UTF-8

If you search for site:https://gitlab.com/codingbrain/sharezone/sharezone-app/-/issues, you get only 2 results. This results are tickets from our repo. But they are indexed, because we posted them on twitter.

Link: https://www.google.com/search?sxsrf=ALeKk00TspkPdLEe9N3vmsZSavdHuiaY4g%3A1600854927596&ei=jxtrX4fwI-uc1fAPya0Y&q=site%3Ahttps%3A%2F%2Fgitlab.com%2Fcodingbrain%2Fsharezone%2Fsharezone-app%2F-%2Fissues&oq=site%3Ahttps%3A%2F%2Fgitlab.com%2Fcodingbrain%2Fsharezone%2Fsharezone-app%2F-%2Fissues&gs_lcp=CgZwc3ktYWIQAzoECCMQJzoECAAQQzoFCAAQsQM6CAgAELEDEIMBOgIIADoCCC46BQguELEDOgcIABCxAxBDUMm3EFiqvRBgt8AQaABwAHgAgAFjiAHUBJIBATeYAQCgAQGgAQKqAQdnd3Mtd2l6wAEB&sclient=psy-ab&ved=0ahUKEwjH866qgf_rAhVrThUIHckWBgAQ4dUDCA0&uact=5

Expected behavior

Users should find our public tickets (not privat, only public!), when searching with a search maschine.

Related tickets / epics