Fixed #12697

core/src/mindustry/ai/Pathfinder.java

@@ -8,7 +8,6 @@ import arc.struct.*;
 import arc.util.TaskQueue;
 import arc.util.*;
 import mindustry.annotations.Annotations.*;
-import mindustry.content.*;
 import mindustry.core.*;
 import mindustry.game.EventType.*;
 import mindustry.game.*;
@@ -263,7 +262,7 @@ public class Pathfinder implements Runnable{
         tile.build == null || !solid || tile.block() instanceof CoreBlock ? 0 : Math.min((int)(tile.build.health / 40), 80),
         tid == 0 && tile.build != null && state.rules.coreCapture ? 255 : tid, //use teamid = 255 when core capture is enabled to mark out derelict structures
         solid,
-        tile.floor().isLiquid && tile.block() == Blocks.air,
+        tile.floor().isLiquid && !tile.block().solid,
         tile.legSolid(),
         nearLiquid,
         nearGround,