Why is the condition - Collapsed to an icon not fulfilled?

Question

Windows

Startup folder

Task bar

I reboot and the browser opens in full screen, what's wrong?

Answer 1

I googled around and all I found out is that some Firefox update broke any ability to run it minimized or with a certain window size. The only way to get around this is to send minimization commands through third-party software after launch, but because of this, it can blink furiously. If you are interested in this option - I will add the answer.