Citation highlight breaks with vim-colors-pencil colorscheme reload

[jamespeapen]

Hi!

I've been using the vim-pandoc plugin for citation completion in markdown and it worked really well. However, once I installed vim-pandoc-syntax, I noticed that it breaks citation highlighting groups in the vim-pencil-colors colorscheme.

When the colorscheme is first loaded, it works, but if it's reloaded, the citation groups look like they're cleared.

:colo pencil
:highlight

:colo pencil
:highlight

I found the reloading issue in goyo.vim and if this is a colorscheme bug, I can open this issue with vim-pencil-colors. However, this bug is only present when vim-pandoc-syntax is loaded.