For those having hard triggering keymaps. (timeoutlen = 100)

[CharlesChiuGit]

I adopt this config and found out my old keymap can't trigger or having a triggering it. After 2 days of debugging it, it was the timeoutlen = 100 that causing the issue, remove it resolve the issue.

Or set it like this:

In vim script:

set timeoutlen=1000 ttimeoutlen=0

In lua:

vim.opt.timeoutlen = 1000,
vim.opt.ttimeoutlen = 0,

Other reference:
link 1
link 2
link 3

[bruteforks]

yeah had this problem adapting your neovim from scratch course. was preventing jj from triggering