Render problems in web build (wrong colors)

Questions & Answers
1

I’m working on a project that is to be used on a webpage.
Sometimes there’s a strange bug: everything is rendered dark, or with strange colors (as if the colors are multiplied with correct render). It only affects the 3D stuff (not GUI textures and the like).
I can’t find a clear way to reproduce it, I first had it a couple of weeks ago for a couple of days, but I haven’t had it on my pc since then, but now we get the same issue on other pcs.

I have no idea what could possibly cause this,

honestly, it seems more like a Unity bug rather than something I’m dooing wrong.

EDIT:

testing showed that the problem only appears with Deferred Rendering (which I need because of an other issue with Forward rendering)

And the problem disapppears (temporarily, while the webpage is open) as soon as something is rendered with a default diffuse shader. (which I normally don’t use)

Definatley seems like a Unity bug

2

We found it has to do with the version of the Unity WebPlayer.

The problem doesn’t occur with the latest version, only with a previous version.
So it seems this is an issue that got fixed in a (fairly) recent update.

So our solution now is to first detect the version of the webplayer, and if it’s lower than 4.1.3, we demand the user to download the newest.

Edit:
Not solved, apparently it still happens in the latest version (just less often).