Region comparison mode constantly resizes while hovering values

[philmcguinn]

Actual Behavior:

When doing a comparison in the "Region" tab, hovering a graph changes the numbers above the graph constantly and creates a very shaky visual

When I...

Steps to Reproduce the Bug:

1. go to https://covidcast.cmu.edu/?sensor=doctor-visits-smoothed_adj_cli&level=county&date=20201113&signalType=value&encoding=color&mode=single&compare=06075&region=41940
2. Hover the COVID Like Symptoms in Community graph from left to right

Expected behavior

Graphs and charts would have appropriate sizing to avoid rapid resizing while hovering

Screenshots

n/a, it's motion not a static image

Rating Scale (1 is minor, 7 is severe):

3 - it makes the comparison mode difficult to use

Context

• Browser: Chrome

Additional context

n/a

[dlaliberte]

This problem is at least partially fixed in the development branch, and will be available in the next release. See e.g.
https://deploy-preview-633--cmu-delphi-covidcast.netlify.app/?sensor=doctor-visits-smoothed_adj_cli&level=county&date=20201113&signalType=value&encoding=color&mode=single&compare=06075&region=41940

There is more that can be done to stabilize the table layout.

[philmcguinn]

Certainly looks better in that version, still a bit jumpy but not headache-inducing 👍

[dlaliberte]

I merged in more changes to reduce tooltip-related flickering.