Perspective File fails to save curve settings

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Hello everyone,

I am using a Docker container running ROS Melodic/Ubuntu 18.04. I am using the rqt gui to analyze live data from a topic by plotting the live data. I have no issues with this and I can change the settings of the plots without any issues. When I'm done using rqt_gui, I save my configuration by exporting a perspective file.

However, when I load this perspective file at a later time, the curve settings (namely line width and color) that were changed before are never loaded. The topic and axis settings are saved without any problems though. I tried looking through the perspective file and there is no mention of the curve settings.

Even when rqt_gui saves the configuration on its own, the changes to curve settings are never kept. I tried taking the same approach on my PC which runs ROS Noetic/Ubuntu 20.04, but I had the same issue. Is it there a way to save changes to the curve settings when plotting live data using rqt gui?

This is my first time asking a question, so please let me know if anything is missing or unclear!