Pedal Lines Rendering as Black Boxes when Published

When I updated my previously published score, some of the pedal lines are rendered as black boxes. I've checked on multiple devices and browsers, so it isn't a problem with either of those. In the Musescore 4 app, it looks completely fine, but when I publish the score a few of the lines don't render correctly for some reason.
Also note that it's not every pedal line, it's only a few of them in a certain section of the song. I've tried deleting and re-adding them, but the problem persists.
Not sure if this is a bug or if there's something I'm missing.
Images are what the published score looks like and what the score looks like when viewed in the app.