[itsme]

I was not aware of the page margin settings and did not care about them (strange, after so many years of MobileSheets usage). So for all my examples the default settings were used:
Left 35, Top 25, Right 35, Bottom 50, Between Columns 40

I reduced 'Bottom' to 25 (same as 'Top') and the page breaks works fine. Thanks for the hint.

As I want to set the margins to small values and reproduce them exactly I miss the + / - buttons  that usually can be find next to sliders in MobileSheets.