diff --git a/src/testdir/test_popupwin.vim b/src/testdir/test_popupwin.vim
index 6607ea2..79eaca7 100644
--- a/src/testdir/test_popupwin.vim
+++ b/src/testdir/test_popupwin.vim
@@ -1556,6 +1556,30 @@
   call delete('XtestPopupNormal')
 endfunc
 
+" this tests that we don't get stuck with an error in "win_execute()"
+func Test_popup_filter_win_execute()
+  CheckScreendump
+
+  let lines =<< trim END
+      let g:winid = popup_create('some text', {'filter': 'invalidfilter'})
+      call timer_start(0, {-> win_execute(g:winid, 'invalidCommand')})
+  END
+  call writefile(lines, 'XtestPopupWinExecute')
+  let buf = RunVimInTerminal('-S XtestPopupWinExecute', #{rows: 10, wait_for_ruler: 0})
+
+  call WaitFor({-> term_getline(buf, 9) =~ 'Not an editor command: invalidCommand'})
+  call term_sendkeys(buf, "\<CR>")
+  call WaitFor({-> term_getline(buf, 9) =~ 'Unknown function: invalidfilter'})
+  call term_sendkeys(buf, "\<CR>")
+  call WaitFor({-> term_getline(buf, 9) =~ 'Not allowed in a popup window'})
+  call term_sendkeys(buf, "\<CR>")
+  call term_sendkeys(buf, "\<CR>")
+  call VerifyScreenDump(buf, 'Test_popupwin_win_execute', {})
+
+  call StopVimInTerminal(buf)
+  call delete('XtestPopupWinExecute')
+endfunc
+
 func ShowDialog(key, result)
   let s:cb_res = 999
   let winid = popup_dialog('do you want to quit (Yes/no)?', #{