From a7db6adc2e2e5936f0158a6843496b123f1d6f28 Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Wed, 8 Feb 2023 16:31:18 -0500
Subject: [PATCH] Always set the `ChartView._viz` for each plot

---
 piker/ui/_chart.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/piker/ui/_chart.py b/piker/ui/_chart.py
index 96187bf2..d2190d42 100644
--- a/piker/ui/_chart.py
+++ b/piker/ui/_chart.py
@@ -1204,6 +1204,10 @@ class ChartPlotWidget(pg.PlotWidget):
         )
 
         pi.viz = viz
+        # so that viewboxes are associated 1-to-1 with
+        # their parent plotitem
+        pi.vb._viz = viz
+
         assert isinstance(viz.shm, ShmArray)
 
         # TODO: this probably needs its own method?