MATERIAL YOU’S NEW PROGRESS BAR DESIGN ASKS YOU TO MIND THE GAP

Summary from the TLDR Design newsletter

Google’s refinement of Material You components continues with an updated design for progress bars. Material 2's UI element was very straightforward with a boxier, neutral style. They now feature rounded corners, with the most significant difference being a gap between the active indicator (what has already been played, downloaded, etc.) and the “track” (remainder).