diff --git a/test/tw-2392.t b/test/tw-2392.t
index 0b7ae11eb..5ed31dae5 100755
--- a/test/tw-2392.t
+++ b/test/tw-2392.t
@@ -8,3 +8,13 @@ task add test project:c.vs.2021-01
 task rc.debug.parser:3 project:c.vs.2021-01 _ids
 
 [[ `task project:c.vs.2021-01 _ids` == "1" ]]
+
+# Same thing now, but with 11 instead of 01
+
+# This sets foo to "PT13H" despite it being a string UDA
+task add test project:c.vs.2021-11
+
+# Show the problem in TAP output
+task rc.debug.parser:3 project:c.vs.2021-11 _ids
+
+[[ `task project:c.vs.2021-11 _ids` == "2" ]]