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?
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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
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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