Fix pre-edit text not always being cleared with iBus input

Fixes #2862

docs/changelog.rst

@@ -35,6 +35,8 @@ To update |kitty|, :doc:`follow the instructions <binary>`.
 
 - Allow passing the current selection to kittens (:iss:`2796`)
 
+- Fix pre-edit text not always being cleared with ibus input (:iss:`2862`)
+
 - Allow setting the :opt:`background_opacity` of new OS windows created via
   :option:`kitty --single-instance` using the :option:`kitty --override` command line
   argument (:iss:`2806`)

kitty/keys.c

@@ -146,6 +146,7 @@ on_key_input(GLFWkeyevent *ev) {
                 schedule_write_to_child(w->id, 1, text, strlen(text));
                 debug("committed pre-edit text: %s\n", text);
             } else debug("committed pre-edit text: (null)\n");
+            screen_draw_overlay_text(screen, NULL);
             return;
         case 0:
             // for macOS, update ime position on every key input