After I publish my report to the service, the data labels for the line (in the stacked line graph) goes back to being white.
I have tried to edit the report and change the color on the line data labels, but as soon as I change the color on either the data label or the background it goes instantly back to white.
On the desktop version it works fine. The data labels in the bars are white, while the data labels for the line is pink with black background. But as soon as it is published to the service the data labels and background for the line goes back to white.
I have made a test but couldn't reproduce your issue. The data label color and background color will not change after published to service. Please check if the power bi desktop has been updated to the latest version, also clear the browser cache and check if the issue persists.
Community Support Team _ Jimmy Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.