diff --git a/src/ui/window.c b/src/ui/window.c

index 74c6ef7d..72436894 100644

--- a/src/ui/window.c

+++ b/src/ui/window.c

@@ -1293,6 +1293,7 @@ void setSplitMode_Window(iWindow *d, int splitFlags) {

         setCurrent_Root(NULL);

     }

     d->splitMode = splitMode;

+ postCommand_App("window.resized");

#if defined (LAGRANGE_ENABLE_CUSTOM_FRAME)

     /* Update custom frame controls. */{

         const iBool hideCtl0 = numRoots_Window(d) != 1;