blueyed/vim-autoclose — comment on commit a7933e3945f386bfbc5b0dfc9ab0f443f5fa0199
File: plugin/autoclose.vim line 303
By artm:

Ah, I get it. If FileType auto-command is executed after the keymaps are already setup it won't remove the maps for the removed symbols. We have to make sure that filetype auto-commands (also user defined) are forcibly called before creating the maps.