Overrides not applied / vanishing after first interaction

[FGromes]

I'm pretty new to neovim so this might be a something trivial to others.
I can not get icon overrides to stay active longer than the first interaction with nvim-tree like opening a folder or file.
My Setup:
MacOS with default terminal,
lazy, treesitter, nvim-lspconfig, hrsh7th/nvim-cmp /cmp-nvim-lsp /cmp-path /cmp-buffer, LuaSnip and nvim-tree with nvim-web-devicons
I want to use the default SF Mono Font and just override all relevant glyphs with SF Symbols.
I've setup Nvim-Tree first with glyphs for folders. They work just fine, no problems at all.
Then i wanted to apply icon overrides by file extension. So i setup a basic web-devicons config. After fixing the ordering they showed up in the NvimWebDeviconsHiTest overrides and everytime i start nvim until i interact with nvim-tree like opening a folder or file.
I've started with Packer as i've followed an older guide but ran into the same problem with lazy now.
The nvim-tree setup is just the default i found in the documentation so it's pretty long but i've also tested with an empty setup