diff --git a/compiler/forget/src/__tests__/fixtures/hir/issue933-disjoint-set-infinite-loop.expect.md b/compiler/forget/src/__tests__/fixtures/hir/issue933-disjoint-set-infinite-loop.expect.md
new file mode 100644
index 0000000000..0350ec3cf1
--- /dev/null
+++ b/compiler/forget/src/__tests__/fixtures/hir/issue933-disjoint-set-infinite-loop.expect.md
@@ -0,0 +1,64 @@
+
+## Input
+
+```javascript
+// This causes an infinite loop in the compiler
+function MyApp(props) {
+  const y = makeObj();
+  const tmp = y.a;
+  const tmp2 = tmp.b;
+  y.push(tmp2);
+  return y;
+}
+
+```
+
+## HIR
+
+```
+bb0:
+  [1] Const mutate y$7_@0[1:5] = Call mutate makeObj$2:TFunction()
+  [2] Const mutate tmp$8_@0[1:5] = read y$7_@0.a
+  [3] Const mutate tmp2$9_@0[1:5] = read tmp$8_@0.b
+  [4] Call mutate y$7_@0.push(mutate tmp2$9_@0)
+  [5] Return freeze y$7_@0
+```
+
+## Reactive Scopes
+
+```
+function MyApp(
+  props,
+) {
+  scope @0 [1:5] deps=[] out=[y$7_@0] {
+    [1] Const mutate y$7_@0[1:5] = Call mutate makeObj$2:TFunction()
+    [2] Const mutate tmp$8_@0[1:5] = read y$7_@0.a
+    [3] Const mutate tmp2$9_@0[1:5] = read tmp$8_@0.b
+    [4] Call mutate y$7_@0.push(mutate tmp2$9_@0)
+  }
+  return freeze y$7_@0
+}
+
+```
+
+## Code
+
+```javascript
+function MyApp$0(props$6) {
+  const $ = React.useMemoCache();
+  let y$7;
+  if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
+    y$7 = makeObj$2();
+    const tmp$8 = y$7.a;
+    const tmp2$9 = tmp$8.b;
+    y$7.push(tmp2$9);
+    $[0] = y$7;
+  } else {
+    y$7 = $[0];
+  }
+
+  return y$7;
+}
+
+```
+      
\ No newline at end of file
diff --git a/compiler/forget/src/__tests__/fixtures/hir/issue933-disjoint-set-infinite-loop.js b/compiler/forget/src/__tests__/fixtures/hir/issue933-disjoint-set-infinite-loop.js
new file mode 100644
index 0000000000..43d343bb1c
--- /dev/null
+++ b/compiler/forget/src/__tests__/fixtures/hir/issue933-disjoint-set-infinite-loop.js
@@ -0,0 +1,8 @@
+// This caused an infinite loop in the compiler
+function MyApp(props) {
+  const y = makeObj();
+  const tmp = y.a;
+  const tmp2 = tmp.b;
+  y.push(tmp2);
+  return y;
+}