TaskCalendar colors not displaying (neovim v0.9.0)

[driverag22]

I have AnsiEsc installed and working, which I can verify because if I run :AnsiEsc then

"Legend: today, weekend, ..."

becomes

"Legend: ^[[38;5;15m^[[...",

but does not seem to compile code.

The complete list of my plugins can be found here.
I though that the transparency plugin might have been causing it (nvim-transparent) but after removing it nothing changed.