diff --git a/lua/lspsaga/symbol/outline.lua b/lua/lspsaga/symbol/outline.lua
index 8155cae4b..df1eaec87 100644
--- a/lua/lspsaga/symbol/outline.lua
+++ b/lua/lspsaga/symbol/outline.lua
@@ -336,19 +336,24 @@ function ot:toggle_or_jump()
   beacon({ pos[1] - 1, 0 }, width)
 end
 
-function ot:create_preview_win(lines)
-  local screen_col = fn.win_screenpos(self.winid)[2]
-  if config.outline.win_position == 'left' then
-    screen_col = api.nvim_win_get_width(self.winid)
-  end
+function ot:calc_preview_win_spec(lines)
   local max_height = vim.o.lines - fn.winline()
-  local max_width = math.floor(screen_col * 0.7)
+  local max_width = math.floor(vim.o.columns * 0.7)
+
+  return {
+    height = math.min(max_height, #lines),
+    width = math.min(max_width, util.get_max_content_length(lines)),
+  }
+end
+
+function ot:create_preview_win(lines)
+  local win_spec = self:calc_preview_win_spec(lines)
 
   local float_opt = {
     relative = 'editor',
     style = 'minimal',
-    height = math.min(max_height, #lines),
-    width = math.min(max_width, util.get_max_content_length(lines)),
+    height = win_spec.height,
+    width = win_spec.width,
     focusable = false,
     noautocmd = true,
   }
@@ -381,6 +386,21 @@ function ot:create_preview_win(lines)
     :wininfo()
 end
 
+function ot:update_preview_win(lines)
+  local win_spec = self:calc_preview_win_spec(lines)
+
+  local win_config = api.nvim_win_get_config(self.preview_winid)
+
+  win
+    :from_exist(self.preview_bufnr, self.preview_winid)
+    :setlines(lines)
+    :winsetconf(vim.tbl_extend('force', win_config, {
+      row = fn.winline(),
+      height = win_spec.height,
+      width = win_spec.width,
+    }))
+end
+
 function ot:refresh()
   api.nvim_create_autocmd('User', {
     group = group,
@@ -440,16 +460,9 @@ function ot:preview()
         api.nvim_buf_get_lines(self.main_buf, range.start.line, range['end'].line + 1, false)
       if not self.preview_winid or not api.nvim_win_is_valid(self.preview_winid) then
         self:create_preview_win(lines)
-        return
+      else
+        self:update_preview_win(lines)
       end
-
-      api.nvim_buf_set_lines(self.preview_bufnr, 0, -1, false, lines)
-      local win_conf = api.nvim_win_get_config(self.preview_winid)
-      local row = fn.winline()
-      win_conf.width = math.ceil(fn.win_screenpos(self.winid)[2] * 0.7)
-      win_conf.row = row - 1
-      win_conf.height = math.min(#lines, bit.rshift(vim.o.lines, 1))
-      api.nvim_win_set_config(self.preview_winid, win_conf)
     end,
   })