Best practice for scroll bars in a browser on iPad

We have a web application which will be used also on iPads.

In some parts content is long and users need to scroll.

On a pc it looks good, however on iPad scroll bars disappear after a few seconds. (This happens on both Chrome and Safari and according to developers it's standard behaviour of iPads.)

Flow of the app is going through each numbered bullet point. Always only one of them is expanded and users can scroll within that group (in the attached picture, "2." is expanded and there are hidden content beyond the red lines).

When scroll bars are hidden there might not be any visual indication that some of the content is hidden and less experienced users get confused believing the app is broken as some functionality is missing.

Is there a best practice to improve this situation making it more clear that additional content is available through scrolling?