Slider driver progress bar?

Just started with Principle and I can’t figure out why a duplicated slider is not working -


I’ve configured Group 2 to Horizontal Scroll and added a Center X Driver for Rectangle 3 (shaded progress bar), exactly as how the first slider is set up but the shaded progress bar is not moving. What else am I missing?


If you check the keyframes in the drivers for both sliders, you’ll see that the bottom one has a value of -245 when it’s supposed to be 0.

Check this video for reference.

Here’s the file corrected:

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