Blue line when using any style other than Default

[WinnerWind]

Description
Seems related to #516
When defining a style other than "Default", A blue seam is created instead of the required style, which looks bad.

I'm using Konsole.

To Reproduce

My dotfiles are here

Steps to reproduce the behavior:

1. Install my config
2. Set the style to "powerline"
3. A blue seam is created

Informations

┌─[soham@wwind:~/.config/nvim]
└─╼ nvim -v
NVIM v0.11.6
Build type: RelWithDebInfo
LuaJIT 2.1.1767980792
Run "nvim -V1 -v" for more info