I looked up our wiki direction and the ideas is to allow WYSIWYG collaboration, see https://about.gitlab.com/direction/create/wiki/

I'm surprised that this wiki bug that two people here mention has only one upvote https://gitlab.com/gitlab-org/gitlab-ce/issues/48641 I'm not sure if the complaints are over multiple issues, if the wiki doesn't get a lot of usage, or something else is going on. The bug sounds legitimate.