patch 8.1.1997: no redraw after a popup window filter is invoked Commit: https://github.com/vim/vim/commit/bcb4c8f9058c17dead61a0a384cb1e09c5fc459b Author: Bram Moolenaar <Bram@vim.org> Date: Sat Sep 7 14:06:52 2019 +0200 patch 8.1.1997: no redraw after a popup window filter is invoked Problem: No redraw after a popup window filter is invoked. Solution: Redraw if needed.

--- a/src/popupwin.c
+++ b/src/popupwin.c
@@ -2802,6 +2802,8 @@ popup_do_filter(int c)
 		&& (wp->w_filter_mode & state) != 0)
 	    res = invoke_popup_filter(wp, c);
 
+    if (must_redraw)
+	redraw_after_callback(FALSE);
     recursive = FALSE;
     KeyTyped = save_KeyTyped;
     return res;