Scroll Sync doesn't work until turned off then on again

I opened Dillinger and scrolled up and down the default document, and it was not synced.

I opened the settings, and the "Scroll Sync" was on. I turned it off and on again, the document preview jumped underneath the menu. When I closed the settings, both documents scrolled together. That happened every time with every document I tried.

Using Chrome Version 147.0.7727.138 (Official Build) (arm64) on Mac M1 with macOS Tahoe 26.3.1.