Buggy Icons

Hi,
Every time I get close to a fire, or other smoky objects, my icons turns grey. I tried with different clients, the offical and the Ender's custom one, and the same problem appears.
I read in another post that turning off shadows sometimes work but not in my case.
Any help?
Every time I get close to a fire, or other smoky objects, my icons turns grey. I tried with different clients, the offical and the Ender's custom one, and the same problem appears.
I read in another post that turning off shadows sometimes work but not in my case.
Any help?