Chinese font width error

[cnfczn]

When inputting Chinese, the text width is not calculated correctly, resulting in the cursor positioning error.
The same font configuration did not happen in nvim (terminal) and nvim-qt.
Font configuration:
call rpcnotify(1,'Gui','Font','Monaco 10')

• OS: linux gentoo
• Neovim version: 0.4.4
• Neovim-Gtk build version: source build