diff --git a/test/tw-2392.t b/test/tw-2392.t
new file mode 100755
index 000000000..0b7ae11eb
--- /dev/null
+++ b/test/tw-2392.t
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+. bash_tap_tw.sh
+
+# This sets foo to "PT13H" despite it being a string UDA
+task add test project:c.vs.2021-01
+
+# Show the problem in TAP output
+task rc.debug.parser:3 project:c.vs.2021-01 _ids
+
+[[ `task project:c.vs.2021-01 _ids` == "1" ]]