since Optifine has been informed about the issue since two months
and nothing has happened I thought I write them by myself. I made the
owner of the mod aware of the problem and he wrote me back
that as soon as he has the free time (he said probably next week is that),
that he will look into the problem also specifically for pixelmon. So
now we can all hope that a fix is soon on its way.
Thanks a lot.
Kind Regards
Cribbel
This is the answer in the E-Mail:
"I will take a look at the Pixelmon problem and fix it when I get some free time, which may be in about a week."