coloring by an attribute with all zeroes except one gives infinite wait #102
Description
Facts:
- all of the attribute values are zero except one
- the attributes are loaded via the UI with 'Add Attributes'
- 151 nodes
- map: https://tumormap.ucsc.edu/?p=chrisw_soe.ucsc.edu/ktb_151_samples_5000_hugo_20190326
Symptoms:
- get an infinite wait when coloring by this attribute
- the legend shows as range
- the shortlist shows as two categories
- it may only happen when all of the values are zero except one
on