WSL NERDTree only works with patched fonts that are in the `.ttf` format

[Zelatrix]

Requirements

Required Info

• [x] I have searched the issues for my issue and found nothing related and/or helpful
• [x] I have read or at least glanced at the FAQ
• [x] I have read or at least glanced at the Wiki
• [x] VimDevIcons is the last loaded vim plugin?
• [x] What version of vim are you using?
  • hint: vim --version VIM version 8.1
• [x] What font are you using? Agave
• [x] Are you using vim from the terminal or a GUI vim? Terminal
• [x] Are you using Mac, Linux or Windows? Windows Subsystem for Linux

Optional Info

• [x] Provide screenshots where appropriate The first screenshot shows NERDTree with the Agave font:

The second screenshot shows NERDTree with the DroidSansMono font