IE did not load last session's tabs despite being set

refer to attached:

I've set to start IE  loading last session's tabs:
however, when rebooting PC or under certain unknown
conditions, the last tabs were not loaded & got a fresh
IE tab instead.

With Chrome, when PC is rebooted or force terminate
the browser, I'll still get the last session's tabs.

What else is missing for my IE?
IElastabstart.jpg
sunhuxAsked:
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sunhuxAuthor Commented:
If I exit IE normally, & start IE again, it would load the
last session's tabs but not other other conditions like
reboot
Ajay ChananaMCSE-2003/08|RHCSA| VCP5/6 |vExpert2018Commented:
How about if  you press ctrl + Shift + t
sunhuxAuthor Commented:
Ctrl-Shift-t  doesn't reload back the last session's tab when IE launches afresh with a single tab:
so doesn't help
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