Uhm, seems like I have just been able to boost a post 2 times

Because I clicked 2 times on the boost button, but I did so because the button didn't become blue on the current screen (I only saw it as blue when I got to my home and saw the post boosted 2 times)

So.. 2 bugs that have to be fixed.

One, server side, should not let someone boost a post without first unboosting it;

The second, client side, should be made so that when you click boost it immediately shows up

I saw this bug on mobile btw