diff --git a/autoload/SpaceVim/plugins/projectmanager.vim b/autoload/SpaceVim/plugins/projectmanager.vim
index 57ea25db1..4a1103c4e 100644
--- a/autoload/SpaceVim/plugins/projectmanager.vim
+++ b/autoload/SpaceVim/plugins/projectmanager.vim
@@ -14,6 +14,10 @@
 " }
 "
 
+let s:BUFFER = SpaceVim#api#import('vim#buffer')
+let s:FILE = SpaceVim#api#import('file')
+
+
 
 call add(g:spacevim_project_rooter_patterns, '.SpaceVim.d/')
 let s:spacevim_project_rooter_patterns = copy(g:spacevim_project_rooter_patterns)
@@ -91,6 +95,11 @@ function! SpaceVim#plugins#projectmanager#reg_callback(func) abort
 endfunction
 
 function! SpaceVim#plugins#projectmanager#current_root() abort
+  " @todo skip some plugin buffer
+  if bufname('%') =~# '\[denite\]-'
+        \ || bufname('%') ==# 'denite-filter'
+    return
+  endif
   " if rooter patterns changed, clear cache.
   " https://github.com/SpaceVim/SpaceVim/issues/2367
   if join(g:spacevim_project_rooter_patterns, ':') !=# join(s:spacevim_project_rooter_patterns, ':')
@@ -113,7 +122,8 @@ function! SpaceVim#plugins#projectmanager#current_root() abort
 endfunction
 
 function! s:change_dir(dir) abort
-  call SpaceVim#logger#info('change to root:' . a:dir)
+  call SpaceVim#logger#info('buffer name: ' . bufname('%'))
+  call SpaceVim#logger#info('change to root: ' . a:dir)
   exe 'cd ' . fnameescape(fnamemodify(a:dir, ':p'))
 
   try
@@ -124,8 +134,6 @@ function! s:change_dir(dir) abort
   " let &l:statusline = SpaceVim#layers#core#statusline#get(1)
 endfunction
 
-let s:BUFFER = SpaceVim#api#import('vim#buffer')
-
 function! SpaceVim#plugins#projectmanager#kill_project() abort
   let name = get(b:, '_spacevim_project_name', '')
   if name !=# ''
@@ -152,7 +160,7 @@ endif
 function! s:find_root_directory() abort
   let fd = expand('%:p')
   let dirs = []
-  call SpaceVim#logger#info('Start to find root for: ' . fd)
+  call SpaceVim#logger#info('Start to find root for: ' . s:FILE.unify_path(fd))
   for pattern in g:spacevim_project_rooter_patterns
     if stridx(pattern, '/') != -1
       let dir = SpaceVim#util#findDirInParent(pattern, fd)
@@ -161,11 +169,14 @@ function! s:find_root_directory() abort
     endif
     let ftype = getftype(dir)
     if ftype ==# 'dir' || ftype ==# 'file'
-      let dir = fnamemodify(dir, ':p')
-      if dir !=# expand('~/.SpaceVim.d/')
-        call SpaceVim#logger#info('        (' . pattern . '):' . dir)
-        call add(dirs, dir)
+      let dir = s:FILE.unify_path(fnamemodify(dir, ':p'))
+      if ftype ==# 'dir'
+        let dir = fnamemodify(dir, ':h:h')
+      else
+        let dir = fnamemodify(dir, ':h')
       endif
+      call SpaceVim#logger#info('        (' . pattern . '):' . dir)
+      call add(dirs, dir)
     endif
   endfor
   return s:sort_dirs(deepcopy(dirs))
@@ -178,17 +189,12 @@ function! s:sort_dirs(dirs) abort
   if bufdir ==# dir
     return ''
   else
-    if isdirectory(dir)
-      let dir = fnamemodify(dir, ':p:h:h')
-    else
-      let dir = fnamemodify(dir, ':p:h')
-    endif
     return dir
   endif
 endfunction
 
 function! s:compare(d1, d2) abort
-  return len(split(a:d2, '/')) - len(split(a:d1, '/'))
+  return len(split(a:d1, '/')) - len(split(a:d2, '/'))
 endfunction
 
 let s:FILE = SpaceVim#api#import('file')