Hey,
Some time ago i had downgrade in Graphics card (to GeForce 7600 GT if that matters). I have to play in compatibility mode now, so equipment is not bright or dark. It works nearly perfect, but it have some glichtes, which could be able to avoid. If i'll turn off after game is loaded, everythings works as it should. But it's too much work every time. In compatibility mode transparent models, that uses other models are dark in places in which it should be invisible. It was acceptable at barbarous thorn blade charge, Wild hunting blade charge, dust bunnes were worse (it looks very bad), but this... just. made. me. blind.
It may be fixed. There should be bridge between compatibility mode and none. It may be displayed correctly for me, but only without compatibility mode, which actually I have to use.
Summing, you have unecessarly touched transparent objects, only destroying it. It does not help in anything, please don't include it in compatibility mode or just make option to turn off that single option.
It would not take a long time to fix that and make users of that mode fell not limited. There is a lot people who use that mode.