Unmap for default keymapping isn't persistant

[AgustinOrdonez]

Hello, I have the following in .ideavimrc

"Remap vim sneak and restore s functionality"
nmap <leader>lb <Plug>(sneak-S)
nmap <leader>lf <Plug>(sneak-s)
:nmap s s
:nmap S S

I've tried with and without :, I can use s normally only until I close the IDE, if I relaunch it again It goes back to using vim-sneak with s or S (My custom mappings still work alongside s-S)

Idea vim version: 2.7.5
IdeaVim-Sneak version:1.2.0