I am not sure what are you trying to do but some programs prefer the so called symbolic images and if the emogies you use have a symbolic version - then they will use the symbolic one. If there is not - they use the colored one. Both versions correspond to one and the same string and no matter how they look in your screen, every application will use the ...
After searching around, stumbling upon Twitter Color Emoji (spoiler: doesn't work on Linux - only for Firefox: https://github.com/eosrei/twemoji-color-font/issues/10#issuecomment-242988370 )
...and a bit of stumbling around, I found the solution on reddit: How to better enable Color Emojis!
Here it goes!
Create a 75-noto-color-emoji.conf file ...
The thing that worked for me is
Fonts looks weird at Loki (and just in my user session!). How do I fix it?
But I got an error:
GLib-GIO-Message: 21:06:40.395: Using the 'memory' GSettings backend.
Your settings will not be saved or shared with other applications.
I solved it as described here https://blog.csdn.net/juwenkailaodi/article/details/86525841]
As mentioned here, the scrambled text in window titles might be due to a Screenshot utility 'conceal text' bug.
in Screenshot preferences window, turn off 'Conceal Text' option:
If this helps, please report this bug to elementary OS devs @ https://github.com/elementary