I try datetime hover tool tip with Python Program at here( http://docs.bokeh.org/en/1.0.2/docs/user_guide/examples/tools_hover_tooltip_formatting.html ). It worked good at Bokeh1.4.0. However tool tip becomes strange when I upgrade bokeh to version 2.2.1.
Hover tooltip show three data, "date: close: volume: ". date: & close: are changed as follows.
date: 2011-04-04 --> 130187520000000
close : $331.83 --> $3318300%
(bokeh version : 1.4.0 --> 2.2.1)
I guess new version bokeh is something wrong at tooltip format handling.
I hope someone could help me.
Note: I execute following two python command to download required AAPL data.