diff --git a/source/core/maphack.cpp b/source/core/maphack.cpp
index 82187a799..e2749c281 100644
--- a/source/core/maphack.cpp
+++ b/source/core/maphack.cpp
@@ -360,6 +360,8 @@ static int32_t LoadMapHack(const char *filename)
 
 void G_LoadMapHack(const char* filename, const unsigned char* md4)
 {
+    hw_ClearSplitSector();
+
     for (auto& p : blockingpairs) p.Clear();
     FString internal = "engine/compatibility/";
     for (int j = 0; j < 16; ++j)
diff --git a/source/core/rendering/hw_sections.cpp b/source/core/rendering/hw_sections.cpp
index df1ee526b..179e39fcd 100644
--- a/source/core/rendering/hw_sections.cpp
+++ b/source/core/rendering/hw_sections.cpp
@@ -219,3 +219,8 @@ void hw_SetSplitSector(int sectnum, int start, int end)
 	splits.Push(start);
 	splits.Push(end);
 }
+
+void hw_ClearSplitSector()
+{
+	splits.Clear();
+}
diff --git a/source/core/rendering/hw_sections.h b/source/core/rendering/hw_sections.h
index 645d0e6e6..4a8b73f0d 100644
--- a/source/core/rendering/hw_sections.h
+++ b/source/core/rendering/hw_sections.h
@@ -30,3 +30,4 @@ extern int numsectionlines;
 
 void hw_BuildSections();
 void hw_SetSplitSector(int sector, int startpos, int endpos);
+void hw_ClearSplitSector();
diff --git a/wadsrc/static/engine/compatibility/5e49c7f6c496e337d59d0c072ed1879b.mhk b/wadsrc/static/engine/compatibility/5e49c7f6c496e337d59d0c072ed1879b.mhk
new file mode 100644
index 000000000..f50cd8af8
--- /dev/null
+++ b/wadsrc/static/engine/compatibility/5e49c7f6c496e337d59d0c072ed1879b.mhk
@@ -0,0 +1,3 @@
+// SW $bath.ap sector bleeds into another area.
+sector 198 split 1105 1125
+