diff --git a/resources/test/fixtures/isort/insert_empty_lines.py b/resources/test/fixtures/isort/insert_empty_lines.py
index fe3de2e1e0..6103bc3405 100644
--- a/resources/test/fixtures/isort/insert_empty_lines.py
+++ b/resources/test/fixtures/isort/insert_empty_lines.py
@@ -27,3 +27,15 @@ if True:
     import os
 def f():
     pass
+
+if True:
+    x = 1
+    import collections
+    import typing
+    class X: pass
+
+if True:
+    x = 1
+    import collections
+    import typing
+    def f(): pass
diff --git a/src/isort/snapshots/ruff__isort__tests__insert_empty_lines.py.snap b/src/isort/snapshots/ruff__isort__tests__insert_empty_lines.py.snap
index a6507a87b2..5e658c4ae4 100644
--- a/src/isort/snapshots/ruff__isort__tests__insert_empty_lines.py.snap
+++ b/src/isort/snapshots/ruff__isort__tests__insert_empty_lines.py.snap
@@ -47,4 +47,34 @@ expression: checks
     end_location:
       row: 16
       column: 0
+- kind: UnsortedImports
+  location:
+    row: 33
+    column: 0
+  end_location:
+    row: 35
+    column: 0
+  fix:
+    content: "    import collections\n    import typing\n\n"
+    location:
+      row: 33
+      column: 0
+    end_location:
+      row: 35
+      column: 0
+- kind: UnsortedImports
+  location:
+    row: 39
+    column: 0
+  end_location:
+    row: 41
+    column: 0
+  fix:
+    content: "    import collections\n    import typing\n\n"
+    location:
+      row: 39
+      column: 0
+    end_location:
+      row: 41
+      column: 0
 
diff --git a/src/isort/track.rs b/src/isort/track.rs
index c034ae22d2..7e6c6cac73 100644
--- a/src/isort/track.rs
+++ b/src/isort/track.rs
@@ -60,12 +60,17 @@ where
         // Track manual splits.
         while self.split_index < self.directives.splits.len() {
             if stmt.location.row() >= self.directives.splits[self.split_index] {
-                self.finalize(Some(match &stmt.node {
-                    StmtKind::FunctionDef { .. } | StmtKind::AsyncFunctionDef { .. } => {
-                        Trailer::FunctionDef
+                // TODO(charlie): Track nesting semantically, rather than via column index.
+                self.finalize(Some(if stmt.location.column() == 0 {
+                    match &stmt.node {
+                        StmtKind::FunctionDef { .. } | StmtKind::AsyncFunctionDef { .. } => {
+                            Trailer::FunctionDef
+                        }
+                        StmtKind::ClassDef { .. } => Trailer::ClassDef,
+                        _ => Trailer::Sibling,
                     }
-                    StmtKind::ClassDef { .. } => Trailer::ClassDef,
-                    _ => Trailer::Sibling,
+                } else {
+                    Trailer::Sibling
                 }));
                 self.split_index += 1;
             } else {
@@ -81,12 +86,17 @@ where
         {
             self.track_import(stmt);
         } else {
-            self.finalize(Some(match &stmt.node {
-                StmtKind::FunctionDef { .. } | StmtKind::AsyncFunctionDef { .. } => {
-                    Trailer::FunctionDef
+            // TODO(charlie): Track nesting semantically, rather than via column index.
+            self.finalize(Some(if stmt.location.column() == 0 {
+                match &stmt.node {
+                    StmtKind::FunctionDef { .. } | StmtKind::AsyncFunctionDef { .. } => {
+                        Trailer::FunctionDef
+                    }
+                    StmtKind::ClassDef { .. } => Trailer::ClassDef,
+                    _ => Trailer::Sibling,
                 }
-                StmtKind::ClassDef { .. } => Trailer::ClassDef,
-                _ => Trailer::Sibling,
+            } else {
+                Trailer::Sibling
             }));
         }