Exactly the same here, albeit with the Windows version.
How the hell do you find out these things????????? Damned thing is all machine language.The steam auto-login can be disabled by renaming the file "steam_api64.dll" to something else, e.g. "steam_api64.dll.switched_off"
The file resides in (or similar to)
c:\Program Files (x86)\Steam\steamapps\common\Elite Dangerous\
There are probably unwanted side effects which I could not yet examine, but it is easily renamed back.
And it is not permanent, with the next update it will reappear.
THIS works. Thank you! Have aPutting Steam in offline mode works also against auto-login (seems to be obvious)
I was able to fix this in two ways. Your browser will store your credentials. Delete the credentials stored in the browser.Same for me. No idea how it saved my password but it comes up as "go ahead and hit play, I've already put your password in for ya" and no way to undo this. Tried logging out of the launcher and then hitting "log-in" again, asks for the log-in id and P/W (and I make sure the "remember P/W" is unchecked) but it still remembers it the next time I fire it up from the Steam PLAY button. I do prefer...security.
Actually, check the research done by RexKraemer, he's been doing a lot of really good ground work in figuring out the "auto login" feature and suggested that if you start Steam in the OFF-LINE mode, THEN start ED, you'll get the normal log-in screen asking for your P/W. So, something is broken and it's not you or me.I was able to fix this in two ways. Your browser will store your credentials. Delete the credentials stored in the browser.
I think in steam you can link the two together.