Color Emoji in Idea (Linux)

I'm trying to make Emojis work on my Arch Linux system with IDEA 2018.2.2 Ultimate.

I have the noto-fonts-emoji package installed and its working fine for the system in general (Terminal, Chrome, etc) but in IDEA nearly no emojis are shown.

I created the following test file:

🤷 Person Shrugging
♡ White Heart Suit
❤ Red Heart
😂 Face With Tears of Joy
🤔 Thinking Face
😍 Smiling Face With Heart-Eyes
😊 Smiling Face With Smiling Eyes
🔥 Fire
👍 Thumbs Up

In chrome it looks fine:

In my Terminal it looks fine:

But in IDEA most of the emojis are missing:

There is not even a placeholder to indicate a broken glyph. There is just nothing. This is what my Settings->Editor->Font config looks like:

I tried using different base fonts, tried to set the Noto Color Emoji font as fallback font, all to no avail.

My ~/.config/fontconfig/conf.d/01-emoji.conf looks like this (in case it matters):

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">

<fontconfig>
 <match>
 <test name="family"><string>serif</string></test>
 <edit name="family" mode="prepend" binding="strong">
 <string>Bitstream Vera Serif</string>
 <string>Noto Color Emoji</string>
 </edit>
 </match>
 <match>
 <test name="family"><string>sans-serif</string></test>
 <edit name="family" mode="prepend" binding="strong">
 <string>Bitstream Vera Sans</string>
 <string>Noto Color Emoji</string>
 </edit>
 </match>
 <match>
 <test name="family"><string>Apple Color Emoji</string></test>
 <edit name="family" mode="prepend" binding="strong">
 <string>Noto Color Emoji</string>
 </edit>
 </match>
 <match>
 <test name="family"><string>Segoe UI Emoji</string></test>
 <edit name="family" mode="prepend" binding="strong">
 <string>Noto Color Emoji</string>
 </edit>
 </match>
</fontconfig>

Does anyone know how to get color Emojis to work on (Arch)-Linux? Or if color doesn't work, have IDEA at least show some monochrome emoji (without reverting the whole OS back to monochrome)?