Preview, the issue will go away if I force enable chrome://flags/#overlay-scrollbars. Screenshot (w/ flag set to default): https://i.imgur.com/tExERgS.png

Google Chrome 128.0.6613.120 (Official Build) (64-bit) (cohort: Stable)

Windows 11 Version 23H2 (Build 22631.4112)

Issue does not occur in Firefox on the same system since it seems to default to overlay scrollbars.