diff -urN portage-3.0.78-orig/lib/_emerge/depgraph.py portage-3.0.78/lib/_emerge/depgraph.py
--- portage-3.0.78-orig/lib/_emerge/depgraph.py	2026-05-03 15:27:03 +0900
+++ portage-3.0.78/lib/_emerge/depgraph.py	2026-05-11 01:05:52 +0900
@@ -10872,10 +10872,9 @@
                 world_set = self._frozen_config.roots[
                     self._frozen_config.target_root
                 ].sets["selected"]
-                for arg, atom in self._dynamic_config._missing_args:
+                for arg, atom in self._dynamic_config._missing_args.copy():
                     if arg.name in ("selected", "world") and atom in world_set:
-                        world_problems = True
-                        break
+                        self._dynamic_config._missing_args.remove((arg, atom))
 
             if world_problems:
                 writemsg(