Hello! Thanks for creating such a great card! I am seeing a problem similar to #652.
When the line is flat, the line is the wrong color (even though the icon is the correct color).
type: custom:mini-graph-card
name: Battery Charge
entities:
- entity: sensor.apc_battery_charge
hours_to_show: 6
points_per_hour: 1
decimals: 0
color_thresholds_transition: hard
color_thresholds:
- value: 20
color: '#ff0000'
- value: 50
color: '#ffa500'
- value: 80
color: '#008000'
show:
labels: false
points: false
icon_adaptive_color: true

When I add the lower_bound, the line turns the correct color but the fill is strange.
type: custom:mini-graph-card
name: Battery Charge
entities:
- entity: sensor.apc_battery_charge
hours_to_show: 6
points_per_hour: 1
decimals: 0
lower_bound: ~0
color_thresholds_transition: hard
color_thresholds:
- value: 20
color: '#ff0000'
- value: 50
color: '#ffa500'
- value: 80
color: '#008000'
show:
labels: false
points: false
icon_adaptive_color: true

Would be great if you can take a look at it when you have time. Thank you!
Hello! Thanks for creating such a great card! I am seeing a problem similar to #652.
When the line is flat, the line is the wrong color (even though the icon is the correct color).
When I add the lower_bound, the line turns the correct color but the fill is strange.
Would be great if you can take a look at it when you have time. Thank you!