TTC fonts not recognised properly

[bluedragon-cairo]

Describe the bug In Korean versions of Windows, there is a built in font called Gulim and Dotum. Both fonts are bundled in one TTC file - gulim.ttc. Supermium only recognizes the first font of the TTC which is Gulim, so the other font in the TTC (Dotum) is not applied & Gulim is used. This is not just these two fonts, but I see some other TTC fonts having this issue too.

To Reproduce Steps to reproduce the behavior:

1. Go to settings, and go to customize fonts, and select a TTC font that is not the first one of the TTC.
2. (OR) create an HTML file that specifies the font in a TTC that is not the first one

Expected behavior It's obvious

Screenshots Even you don't know Korean, the text appearance looks different, with Pale Moon (correct font rendering)'s one characters look sharper

Desktop (please complete the following information):

• OS: Windows XP SP3 Media Center Edition 2004 and 2005 (Both happening)
• Bitness of browser: IA-32

Additional context X

[bluedragon-cairo]

Irrelevant, but whoever askes why I'm not using the custom trapeozoid tabs: I only like the non-MD design from Chrome 1-52 as Supermium currently mimicks Chrome 53-68's one (MD1).

[win32ss]

Did this work in earlier versions of Chromium when GDI was properly supported? Anyway I am going to open a discussion related to font rendering issues in general.

[bluedragon-cairo]

Checked Chrome 2.0.165.0, it renders properly there.