diff --git a/piker/ui/_interaction.py b/piker/ui/_interaction.py
index 9d7159c3..a659612a 100644
--- a/piker/ui/_interaction.py
+++ b/piker/ui/_interaction.py
@@ -939,6 +939,7 @@ class ChartView(ViewBox):
                     if overlay:
                         for pi in overlay.overlays:
                             pi.vb._set_yrange(
+                                # TODO: get the range once up front...
                                 # bars_range=br,
                             )
                     profiler('autoscaled linked plots')