Hello, I have a long list of items that have sub-headings which looks like this when shown in the browser

SubHeading1
list-item-1a
list-item-1b
list-item-1c
list-item-1d

SubHeading2
list-item-2a
list-item-2b
list-item-2c

SubHeading3
list-item-3a
list-item-3b
list-item-3c
list-item-3d
list-item-3e
...

When generated in the PDF each heading should come out as normal but if a list goes over the page the heading should be outputted - for example if SubHeading3 above went over the page, the PDF should look like

...
SubHeading3
list-item-3a
list-item-3b
list-item-3c
list-item-3d
**----page-break----**
SubHeading3
list-item-3e
...

I can get this to work on most occasions by putting the data into a table, the SubHeadings in the thead/tr (with a "page-break-inside:avoid") and the list-item's in the tbody/tr (with a "page-break-inside:avoid"). However in certain situations one row is outputted on a new page without the SubHeading - so instead of the above I get

...
SubHeading3
list-item-3a
list-item-3b
list-item-3c
list-item-3d
**----page-break----**
list-item-3e
...

The canvas is defined as 11x8.5 (letter/landscape) and I have reduced the available space (within the canvas) by 0.2 inches to allow room for a page number. I have tried to remove paddings/margins around the table cells where the page-break is however I still have the problem - is there anything else I need to do ?

Kind regards