Why after downloading Firefox and signing in my account two programs Firefox run in my PC?

I have downloaded Firefox recently and have signed in my Firefox account. After dowwnloading, I was asked to install updates, which I did. After the second installation although at my programs menu I have one Firefox installed at the start page there are two icons of Firefox. Also, at the recently added programs there are there are two firefox icons. If I will press the one it opens the Firefox browser showing me signing in. If i will press the other icon it does not show me signing in. Is it a normal state. Can you figure out the two Firefox icons created. How can I delete the one? It does not let me delete them by pressing delete. Thank you for reading.