Explicitly enable chart widget yranging in display init

piker/ui/_chart.py

@@ -923,8 +923,6 @@ class ChartPlotWidget(pg.PlotWidget):
         # show background grid
         self.showGrid(x=False, y=True, alpha=0.3)
 
-        # self.cv.enable_auto_yrange()
-
         self.pi_overlay: PlotItemOverlay = PlotItemOverlay(self.plotItem)
 
         # indempotent startup flag for auto-yrange subsys

piker/ui/_display.py

@@ -1438,5 +1438,8 @@ async def display_symbol_data(
                 rt_linked.mode = mode
 
                 rt_chart.default_view()
+                rt_chart.view.enable_auto_yrange()
                 hist_chart.default_view()
+                hist_chart.view.enable_auto_yrange()
+
                 await trio.sleep_forever()  # let the app run.. bby