Hello! Ran into a weird bug, it has me really stumped. For some reason, my Altair chart’s tooltip has incorrect dates when the Altair chart is rendered with Panel. However, if it is rendered in plain notebook, the dates are fine. Here’s a simple example notebook that I hope others have the time to run and see if they can replicate what I’m experiencing. I am using Panel version 0.9.5, bokeh 2.0.1, holoviews 1.13.2, hvplot 0.5.2, and altair 4.1.0. Wouldn’t surprise me if it was something simple that I overlooked.
Thanks for filing this as an issue. Definitely seems like a bug and an odd one at that so will need some investigation.