OK, I found the problem. It is because Günther has Safari Private Browsing turned on.
Here is my experiment.
On my Macbook I started Safari with the following Preferences, but did not turn on Private Browsing.
General
- Open pages in tabs instead of Windows: Always.
- Checked: Cmd-click opens a link in a new tab.
- Checked: When a new tab opens, make it active.
Security
- Checked: Block pop-up windows.
Privacy
- Checked: Website tracking. Ask websites not to track me.
I then logged into Nikongear and opened every NG link with a Cmd-tab so that it appeared in a New Tab. Each Tab that became active showed me
still logged into Nikongear.
In short everything worked as it should.
NOW, I added the
additional setting of Private Browsing to Safari via the Safari Main Menu. (Private Browsing is not in Safari Preferences.)
And now every time I opened a link with Cmd-tab, the active window in the New Tab had lost my login.
However, this is exactly what Private Browsing is supposed to do!! Safari tells you this directly.
Do you want to turn on Private Browsing?
Safari can keep your browsing history private. When you turn on private browsing, Safari doesn’t remember the pages you visit, your search history, or your AutoFill information.
So problem solved.
Günther, if you want to use Safari Private Browsing, then you must not use Cmd-click to open new NG links.
*****
ADDED LATER: Firefox under Private Browsing seems to remember logins. I don't know if that is a good thing or a bad thing.