Vertex color alpha problem importing collada

It seems that alpha value of vertex color is always set to 1, no matter what is written in collada file. Is this a bug?

I just stumbled upon this. Yes it seems to be a bug. The file seems to contain the alpha properly, Unity just seems to ignore it.

Also just stumbled onto this issue. We have a bunch of effects in our game that rely on mesh colours… wild that this bug has been around for more than 10 years. Filed a bug report with an example, let’s see.

My bug report came back. They acknowledge the issue but “won’t fix”.