tmp fix for serveral bugs

lua/cmp/init.lua

@@ -5,6 +5,7 @@ local feedkeys = require('cmp.utils.feedkeys')
 local autocmd = require('cmp.utils.autocmd')
 local keymap = require('cmp.utils.keymap')
 local misc = require('cmp.utils.misc')
+local api  = require('cmp.utils.api')
 
 local cmp = {}
 
@@ -270,11 +271,14 @@ cmp.setup = setmetatable({
 })
 
 autocmd.subscribe('InsertEnter', function()
+  --Avoid invalid mode detection on `InsertEnter` autocmd.
+  vim.schedule(function()
     if config.enabled() then
       cmp.core:prepare()
       cmp.core:on_change('InsertEnter')
     end
   end)
+end)
 
 autocmd.subscribe('TextChanged', function()
   if config.enabled() then

lua/cmp/utils/api.lua

@@ -1,5 +1,7 @@
 local api = {}
 
+api.in_insert_enter_autocmd = nil
+
 api.get_mode = function()
   if api.is_insert_mode() then
     return 'i'
@@ -17,7 +19,7 @@ api.is_insert_mode = function()
     'i',
     'ic',
     'ix',
-  }, vim.api.nvim_get_mode().mode) or vim.v.insertmode == 'i'
+  }, vim.api.nvim_get_mode().mode)
 end
 
 api.is_cmdline_mode = function()