diff --git a/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/output.txt b/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/output.txt
new file mode 100644
index 000000000000..5d7586fde5e3
--- /dev/null
+++ b/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/output.txt
@@ -0,0 +1,4 @@
+asdf
+asdf2
+5
+asdf3
diff --git a/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/test.as b/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/test.as
new file mode 100644
index 000000000000..776d0118e4f7
--- /dev/null
+++ b/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/test.as
@@ -0,0 +1,8 @@
+this.tabIndex = "asdf";
+trace(this.tabIndex);
+this.tabIndex = "asdf2";
+trace(this.tabIndex);
+this.tabIndex = 5;
+trace(this.tabIndex);
+this.tabIndex = "asdf3";
+trace(this.tabIndex);
diff --git a/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/test.swf b/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/test.swf
new file mode 100644
index 000000000000..449492534a69
Binary files /dev/null and b/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/test.swf differ
diff --git a/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/test.toml b/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/test.toml
new file mode 100644
index 000000000000..29f3cef79022
--- /dev/null
+++ b/tests/tests/swfs/avm1/tab_ordering_properties_tab_index_edge_case/test.toml
@@ -0,0 +1,2 @@
+num_ticks = 1
+known_failure = true