Help with fresh opening of the browser.

Whenever I open up a fresh start of opera and had tabs open prior, it opens up the same amount of windows as there were tabs prior.

So if I had 6 tabs open then shut off my pc, when I turn it back on and open up Opera GX it will open up 6 blank separate instances of opera GX. Then I have to go through and close each window until I’m down to 1.

Anyone know how to fix that? Is it a setting or bug?