Hello i´m using the ImageGraph from the HTML API to show a horizontal bar graph image with the countries of the visitors. In this image the last entry always get a wrong flag (exception is if i have a high amount of countries that i get 'other' in the last row without a flag). The country is correct.
The actual version 3.5.1 of matomo is installed

If i use the dashboard to show the visitorr countries i get the identical number of visitors per country with the correct flags.

I use this code to call the image:

https://xxxxxxxxxxx.de/analytics/piwik/index.php?module=API&method=ImageGraph.get&idSite=1&apiModule=UserCountry&apiAction=getCountry&token_auth=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx&graphType=horizontalBar&period=month&date=today&showLegend=1&width=700&height=460&fontSize=8&textColor=7f5500&backgroundColor=ffaa00&gridColor=7f5500&colors=7f0000&legendFontSize=8&alt=''

Is there a known issue in the ImageGrapf functionality or maybe i´ve done somethimg wrong?