If press K (map to hover_doc) twice very fast, the hover window will not dismiss.

[towry]

I can switch to the hover window by ctrl+w w, and close it with :q.

the require('lspsaga.hover'):has_hover() returned false.

[glepnir]

if you map K with hover without ++keep argument , press twice it will jump into the hover window. use ++keep press k twice it will close the hover window.

[towry]

The behavior that I was expericing is if I press K too quick, it does not jump into the hover window, I have to add nowait=true option to my keybinding to make it work properly.

-- add nowait = true make jump to hover window works.
vim.keymap.set('n', 'K', 'Lspsaga hover_doc', { nowait = true })

Just for someone who would have similar issue.