See also WinSCP suddenly opens with two local panels with seemingly no option to open a connection to my server. What do I do?.

Related: Issue 2217 – Make it harder to mis-click "never show this again" checkboxes

@martin: It works, thanks.

Thanks bro!!

You have probably turned off "Show Login dialog on startup" option:
https://winscp.net/eng/docs/ui_pref_window

Every time I started winscp the "new session" window would pop up, but that's no longer the case. I checked update logs and there's no mention of this featured being removed or having to set it up manually.
Any ideas how to fix? I downgraded my app and it worked with previous versions.