Bar graph not showing correct values

[tomlut]

Incorrect data shown in bar graph:

aggregate_func: max
color_thresholds:
  - color: '#039BE5'
    value: 0
  - color: '#0da035'
    value: 5
  - color: '#e0b400'
    value: 7.5
  - color: '#e45e65'
    value: 10
entities:
  - entity: sensor.total_cost_today
group_by: date
hours_to_show: 168
name: Energy Cost Per Day
show:
  graph: bar
  labels: true
type: 'custom:mini-graph-card'

Seems to be some sort of caching issue as a when opened in private browsing mode the graph displays correctly:

Actual last seven days data (newest to oldest):

4.64
5.29
6.08
5.81
6.49
5.95
5.17

Interestingly a line graph shows the same incorrect values:

color_thresholds:
  - color: '#039BE5'
    value: 0
  - color: '#0da035'
    value: 5
  - color: '#e0b400'
    value: 7.5
  - color: '#e45e65'
    value: 10
color_thresholds_transition: hard
entities:
  - sensor.total_cost_today
group: false
hour24: true
hours_to_show: 168
line_width: 4
name: Daily energy cost
points_per_hour: 1
show:
  extrema: true
  fill: fade
  icon: true
  labels: false
  name: true
  state: true
type: 'custom:mini-graph-card'

Compare to built in graph:

Or the mini graph opened in a private browsing window (values are slightly off due to number of points per hour, but not as bad as above):

[Kejszijo]

+1
Same problem here.

[kalkih]

Thanks for the report!
Seems related to #193, same thing, clearing cached history data seems to solve it temporarily.
Let's continue tracking this issue in #193.