Now, as everyone on HN knows, Trello was bought by Atlassian not so long ago (2017?). So now the auth process is handled by Atlassian (makes sense I guess).
Recently, due to a browser cookies' spring cleaning, I had to log in to Trello again. The whole experience felt sluggish and poorly designed.
In short: I went to "trello.com/<project_id>", and saw a short, classic login form: "Log in to Trello: Enter email Enter password Log in"
Sweet. BUT: after inputing my email, the bottom half switched to "Login with Atlasssian" (thanks, AJAX). I reluctantly clicked, and was unsurprisingly redirected to "https://id.atlassian.com/login".
Ok, fine, I'll input my password. I click, and the screen goes blank for 5 secs. Only the "Please wait..." on the top left part of the screen convinces me that something is gonna happen somehow. trello.com? No, I was redirected to "https://auth.atlassian.com/login", which showed a page for some reason, but redirected me automatically 3 seconds later to trello.com.
Thinking that this was a tech company logging a user made me think of the horror stories that probably exist with banks, governments, etc.
So, what's your experience with a very bad, poorly designed login experience?