diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
index 4554712..ea95cbf 100644
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -3742,4 +3742,17 @@
   delfunc TestGlobComplete
 endfunc
 
+func Test_window_size_stays_same_after_changing_cmdheight()
+  set laststatus=2
+  let expected = winheight(0)
+  function! Function_name() abort
+    call feedkeys(":"..repeat('x', &columns), 'x')
+    let &cmdheight=2
+    let &cmdheight=1
+    redraw
+  endfunction
+  call Function_name()
+  call assert_equal(expected, winheight(0))
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab