Screen functioning strangely when using "Timeline Holder"

Hi there.

I composed a new TimeLine Holder project, which works fine from composer,
but wont work correctly on clients touchscreen.
When using finger to scroll, the whole timeline just bunches and squeezes up together instead
of scrolling left to right (><).
Any ideas on what may be causing this?
Any help much appreciated.

This a shared project link I have sent them.
Please see attached video


Hi Greg,

We answered to your question on the ticket you opened with our support team, so I’m closing this topic.

For questions like this, going through our support platform is the most efficient way for you to get a quick answer.