Key mappings in .vimrc not overriding in the order they appear in the configuration

[paakmau]

To Reproduce

Write in .vimrc:

nmap ss :echo "first"<CR>
nmap ss :echo "second"<CR>

Expected behavior

When ss triggerred, it should print second.
But first is shown.

Screenshots

Environment (please complete the following information):

• Extension (VsCodeVim) version: 1.32.1
• VSCode version: 1.105.1
• OS: win11 26200.7171