🎯 Subject of the issue
I am running ubuntu 18.04, and using Tilix. I have installed powerline patched fonts from their github. Tilix is configured to use powerlevel 9k with mode="nerdfont-complete" and i have defined a custom logo section to be show in prompt element. The font i am using is Hack NerdFont Regular, however the custom logo element's separator is showing a gap.
I tried using the powerline Hack font, the gap is gone, but it has problem showing certain glyphs.

With Gap
https://user-images.githubusercontent.com/11088527/40609298-c9d413f2-62a0-11e8-85b0-2d42027ea05a.png

Glyph not showing for github
https://user-images.githubusercontent.com/11088527/40609397-17f1b922-62a1-11e8-8e46-c6655ffc4383.png

🔧 Your Setup

• Hack Nerd Font Regular
• Tilix
• Ubuntu 18.04