diff --git a/src/game/engine/scenes/world_map/world_map_arena.gd b/src/game/engine/scenes/world_map/world_map_arena.gd
index 1a9b683a..3195bae9 100644
--- a/src/game/engine/scenes/world_map/world_map_arena.gd
+++ b/src/game/engine/scenes/world_map/world_map_arena.gd
@@ -172,7 +172,7 @@ func _on_turn_ended(_turn_number: int, _player_index: int) -> void:
 	var shot_turn: int = EnvConfig.get_int("AI_ARENA_SCREENSHOT_TURN", -1)
 	if shot_turn > 0 and GameState.turn_number == shot_turn and not _screenshot_taken:
 		_screenshot_taken = true
-		_capture_viewport_screenshot.call_deferred()
+		_capture_viewport_screenshot_async()
 
 	if Time.get_ticks_msec() - _start_ticks_msec > WALL_CLOCK_LIMIT_MSEC:
 		var winner_clock: int = _pick_winner_by_score()
@@ -184,9 +184,22 @@ func _on_turn_ended(_turn_number: int, _player_index: int) -> void:
 		_finish(winner_score, "score")
 
 
-func _capture_viewport_screenshot() -> void:
+func _capture_viewport_screenshot_async() -> void:
+	## Godot on Wayland skips rendering occluded/unfocused windows, so a
+	## raw `get_viewport().get_texture().get_image()` here grabs whatever
+	## stale frame was last drawn — which for windows stacked behind
+	## other arena instances is the loading-screen splash. Wait a few
+	## idle frames AND force an explicit draw pass before grabbing, so
+	## every window renders at least one real gameplay frame to its
+	## texture before we read it back.
 	if _result_dir.is_empty():
 		return
+	var tree: SceneTree = _world_map.get_tree()
+	for _i: int in range(3):
+		await tree.process_frame
+	RenderingServer.force_draw()
+	await tree.process_frame
+
 	var viewport: Viewport = _world_map.get_viewport()
 	if viewport == null:
 		return