patch 8.1.1562: popup window not always redrawn after popup_setoptions() commit https://github.com/vim/vim/commit/ad24a71e2248e839c875c0bc0e6ad3dbeea16998 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jun 17 20:05:45 2019 +0200 patch 8.1.1562: popup window not always redrawn after popup_setoptions() Problem: Popup window not always redrawn after popup_setoptions(). Solution: Force a redraw.

--- a/src/popupwin.c
+++ b/src/popupwin.c
@@ -1449,6 +1449,7 @@ f_popup_setoptions(typval_T *argvars, ty
     apply_move_options(wp, dict);
     apply_general_options(wp, dict);
 
+    popup_mask_refresh = TRUE;
     popup_adjust_position(wp);
 }