Red of 3D Anaglyph mode is not the same as the standard color of 3D glasses

Confirmed. The red is too bright for standard 3D glasses.

Steps to reproduce:
Turn 3D anaglyph on (Esc>Options>Video Settings)
place a snow block (Because it is the closest to white as possible)
You will notice that the red is brighter than you would expect it to be

I do not think we'll be fixing such novelty things 😃

But whenever I use my 3D glasses, the red side if the glasses sees a ghost-like appearance of the game, which I think is the issue.

The colours look fine to me. I do agree that there is a 'ghost' image appearing, but that isn't caused by the colours (see MC-4262).

Confirmed! I can see some of blue channel with my glasses. I have taken the photo with my mobile and the glasses

If you take a look at the red/green/blue channels of the attached screenshot (e.g. with Photoshop) you can see that the separation is correctly done by Minecraft: red channel for left eye, blue channel for right eye and green channel filled with the right eye image to support its brightness. The problem with anaglyph glasses is that the red filter often tend to not only let the red channel pass, but also some of the green, so that your left eye also see 80% left eye image and 20% right eye image. This is true for the blue filter too. (Actutally this helps to get more realistic colors in your brain, but produce the ghosting!). Shifting hue of the image doesn't help at all, because you are then moving color information from the blue channel to the red channel and vis versa producing even more ghosting because your glasses can only filter red and blue. You can't do an "orange/purple" anaglyph image with your computer screen, because it only emits red/green/blue colors, you won't be able to separate "orange" and "purple" into two separate images for your left eye and your right eye anymore, because those information is mixed into all three channels that are available only. So what you need is a sharper "red" filter that don't let green or blue light through it to not see those channels with the left eye. Make sense?

I consider this bug as "resolved" because Minecraft does the color separation correctly.

I have to disagree. Minecraft might do the color separation technically correct in the way you explained it has to work, though I do not have these issues when playing other games in 3D anaglyph mode. This shows that it can be done without these ghost effects and that it is not the glasses' fault. The ghosting only stands out when you are looking at bright things like the white sheep in the first screenshot, and it also is clearly visible in your screenshot if you look at the white window frames through the red glass of your anaglyph glasses.

TL;DR: Achim might be right about technical aspect, that does not change anything about the issue being there -> not resolved

@Tim Weber: Can you provide screenshots of other games you mentioned, so I can compare them to the Minecraft rendered ones? Would be interesting to see what makes the difference (make sure they also have the high contrast of white areas against dark surroundings). TIA!

Is this still an issue in the most recent versions (currently that is 1.10.2, or 16w43a) of Minecraft? If so, please update the affected versions and help us keeping this ticket updated from time to time. If you are the owner/reporter of this ticket, you can modify the affected version(s) yourself.

Should be considered either Fixed or Invalid as of 1.13 due to the removal of 3D Anaglyph.