Very difficult to solve and strange CSS3 opacity transition issue (…must be a bug?)

Question

I am absolutely tearing all of my hair out with this highly frustrating and strange CSS problem I am having.

I am using the Bones boilerplate to make a website, and

Answer 1

On thins link you can find solution for Mozilla bug.

You need to add 1 CSS rule:

-moz-backface-visibility: hidden;