diff --git a/tests/issues/980/980.ino b/tests/issues/980/980.ino
new file mode 100644
index 00000000..2d51e094
--- /dev/null
+++ b/tests/issues/980/980.ino
@@ -0,0 +1,85 @@
+/* -*- mode: c++ -*-
+ * Copyright (C) 2020 Keyboard.io, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see .
+ */
+
+#include
+#include
+
+#include "./common.h"
+
+#undef min
+#undef max
+#include
+
+// *INDENT-OFF*
+KEYMAPS(
+ [0] = KEYMAP_STACKED
+ (
+ Key_X, ___, ___, ___, ___, ___, ___,
+ TD(0), ___, ___, ___, ___, ___, ___,
+ LockLayer(1), ___, ___, ___, ___, ___,
+ ___, ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___,
+ ___,
+
+ ___, ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___,
+ ___
+ ),
+ [1] = KEYMAP_STACKED
+ (
+ Key_Y, ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___,
+ ___,
+
+ ___, ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___, ___, ___, ___,
+ ___, ___, ___, ___,
+ ___
+ ),
+)
+// *INDENT-ON*
+
+void tapDanceAction(uint8_t tap_dance_index,
+ KeyAddr key_addr,
+ uint8_t tap_count,
+ kaleidoscope::plugin::TapDance::ActionType tap_dance_action) {
+ switch (tap_dance_index) {
+ case 0:
+ return tapDanceActionKeys(tap_count, tap_dance_action,
+ Key_A, LockLayer(1));
+ default:
+ break;
+ }
+}
+
+KALEIDOSCOPE_INIT_PLUGINS(TapDance);
+
+void setup() {
+ Kaleidoscope.setup();
+ TapDance.time_out = 25;
+}
+
+void loop() {
+ Kaleidoscope.loop();
+}
diff --git a/tests/issues/980/common.h b/tests/issues/980/common.h
new file mode 100644
index 00000000..dcfcc35b
--- /dev/null
+++ b/tests/issues/980/common.h
@@ -0,0 +1,27 @@
+// -*- mode: c++ -*-
+
+/* Kaleidoscope - Firmware for computer input devices
+ * Copyright (C) 2020 Keyboard.io, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see .
+ */
+
+#pragma once
+
+#include
+
+namespace kaleidoscope {
+namespace testing {
+
+} // namespace testing
+} // namespace kaleidoscope
diff --git a/tests/issues/980/sketch.json b/tests/issues/980/sketch.json
new file mode 100644
index 00000000..43dc4c7e
--- /dev/null
+++ b/tests/issues/980/sketch.json
@@ -0,0 +1,6 @@
+{
+ "cpu": {
+ "fqbn": "keyboardio:virtual:model01",
+ "port": ""
+ }
+}
\ No newline at end of file
diff --git a/tests/issues/980/test.ktest b/tests/issues/980/test.ktest
new file mode 100644
index 00000000..d695aa5a
--- /dev/null
+++ b/tests/issues/980/test.ktest
@@ -0,0 +1,69 @@
+VERSION 1
+
+KEYSWITCH X 0 0
+KEYSWITCH TD_0 1 0
+KEYSWITCH LL_1 2 0
+
+# ==============================================================================
+NAME TapDance issue 980 no overlap
+
+RUN 5 ms
+
+PRESS TD_0
+RUN 5 ms
+RELEASE TD_0
+RUN 10 ms
+
+PRESS TD_0
+RUN 5 ms
+
+RELEASE TD_0
+RUN 5 ms
+
+PRESS X
+RUN 2 cycles
+EXPECT keyboard-report Key_Y # The key should be mapped from layer 1 (Y), not layer 0 (X)
+RUN 5 ms
+
+RELEASE X
+RUN 1 cycle
+EXPECT keyboard-report empty # The report should be empty
+RUN 5 ms
+
+PRESS LL_1
+RUN 1 cycle
+
+RELEASE LL_1
+RUN 1 cycle
+
+# ==============================================================================
+NAME TapDance issue 980 rollover
+
+RUN 5 ms
+
+PRESS TD_0
+RUN 5 ms
+RELEASE TD_0
+RUN 10 ms
+
+PRESS TD_0
+RUN 5 ms
+
+PRESS X
+RUN 2 cycles
+EXPECT keyboard-report Key_Y # The key should be mapped from layer 1 (Y), not layer 0 (X)
+RUN 5 ms
+
+RELEASE TD_0
+RUN 5 ms
+
+RELEASE X
+RUN 1 cycle
+EXPECT keyboard-report empty # The report should be empty
+RUN 5 ms
+
+PRESS LL_1
+RUN 1 cycle
+
+RELEASE LL_1
+RUN 1 cycle