The graph legend truncates at the nearest period (.) in its grouping

To reproduce:
Use the following query
%sh echo -e "%table name\tgroup\tvalue\n1\t2.3.4.5\t100000"
After running, select the line graph. Use name as keys, group as groups, and value as values.
Expected
Graph legend in top left and overlay displays 2.3.4.5 as a group.
Actual
Graph legend only shows 2 as a group (truncating off the rest of the number).