patch 9.0.0591: message window popup shows on only one tab page Commit: https://github.com/vim/vim/commit/4569020538f76cab588f723bd7243e3896937568 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Sep 26 12:57:11 2022 +0100 patch 9.0.0591: message window popup shows on only one tab page Problem: Message window popup shows on only one tab page. (Naruhiko Nishino) Solution: Show the message window popup on all tab pages. (closes #11231)

--- a/src/popupwin.c
+++ b/src/popupwin.c
@@ -2053,6 +2053,8 @@ popup_create(typval_T *argvars, typval_T
 	    }
 	}
     }
+    else if (popup_is_notification(type))
+	tabnr = -1;  // show on all tabs
 
     // Create the window and buffer.
     wp = win_alloc_popup_win();