From e6b7dcb60d0774acbc5ad41c27f5e03a1dc1a601 Mon Sep 17 00:00:00 2001
From: mateoalfaro <liquidsuper2@gmail.com>
Date: Fri, 4 Sep 2026 13:33:30 -0600
Subject: [PATCH] fix: guard tiling preview without grabbed view

---
 src/interactive.c                  | 7 ++++++-
 src/protocols/singularity-tiling.c | 4 ++++
 src/regions.c                      | 2 +-
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/interactive.c b/src/interactive.c
index f2bb853054..203f562309 100644
--- a/src/interactive.c
+++ b/src/interactive.c
@@ -212,7 +212,12 @@ edge_from_cursor(struct seat *seat, struct output **dest_output,
 	*edge1 = LAB_EDGE_NONE;
 	*edge2 = LAB_EDGE_NONE;
 
-	if (!view_is_floating(server.grabbed_view)) {
+	/*
+	 * Overlay updates can also be requested by compositor protocols while no
+	 * interactive move is active.  In that case there is no edge-snap
+	 * candidate.  Do not pass the NULL grabbed view to view_is_floating().
+	 */
+	if (!server.grabbed_view || !view_is_floating(server.grabbed_view)) {
 		return false;
 	}
 
diff --git a/src/protocols/singularity-tiling.c b/src/protocols/singularity-tiling.c
index d66a49edef..d7ce5536b5 100644
--- a/src/protocols/singularity-tiling.c
+++ b/src/protocols/singularity-tiling.c
@@ -115,6 +115,10 @@ handle_set_drop_preview(struct wl_client *client, struct wl_resource *resource,
 		.width = width,
 		.height = height,
 	};
+	if (!manager->drop_preview_active) {
+		overlay_finish(&server.seat);
+		return;
+	}
 	overlay_update(&server.seat);
 }
 
diff --git a/src/regions.c b/src/regions.c
index 9f195723f4..ebb8e180a6 100644
--- a/src/regions.c
+++ b/src/regions.c
@@ -22,6 +22,7 @@ regions_should_snap(void)
 	if (server.input_mode != LAB_INPUT_STATE_MOVE
 			|| wl_list_empty(&rc.regions)
 			|| server.seat.region_prevent_snap
+			|| !server.grabbed_view
 			|| !view_is_floating(server.grabbed_view)) {
 		return false;
 	}
@@ -170,4 +171,3 @@ regions_destroy(struct seat *seat, struct wl_list *regions)
 		zfree(region);
 	}
 }
-