Hi Jakob,
If you use a microflow as data source, you can retrieve and count your Issue objects thus getting all the numbers/info you want to include in your bar chart. Create a non persistent entity ‘ChartHelper’ or similar which you give attributes like x-value, y-value, sorting-value and description, and create and populate these objects in the microflow that ‘feeds’ your bar chart. Add them to a list, and have that list be the return value of your microflow.
Let me know if this is clear or not, good luck!