I seem to have isolated the problem to using a link to the website on the phone’s home screen (created from FF using the “Add to Home screen” option in the three dots menu next to the address bar.
Starting that way seems to give any session cookies a very short life and they disappear quickly (logging me out). I created a bookmark within FF and have been using that and haven’t been logged out since.
In fact, if I use the home screen link to programming.dev, FF doesn’t think I’m logged in, but then if I use the bookmark from within that same instance of FF, it instantly sees me as already logged in.
I seem to have isolated the problem to using a link to the website on the phone’s home screen (created from FF using the “Add to Home screen” option in the three dots menu next to the address bar.
Starting that way seems to give any session cookies a very short life and they disappear quickly (logging me out). I created a bookmark within FF and have been using that and haven’t been logged out since.
In fact, if I use the home screen link to programming.dev, FF doesn’t think I’m logged in, but then if I use the bookmark from within that same instance of FF, it instantly sees me as already logged in.
Very strange.