Created attachment 183100 [details]
Table spanning pages with constrained text

Paragraph may be flagged "Keep with next paragraph" or "Don't split paragraph" in Text Flow tab of the paragraph style.

This works fine in pages or sections.

When a table is used to achieved "parallel" layout, these flags are ignored, whether row is allowed to split or not.

Though I understand the difficulty to manage such a table (cell contents may be forced to next page while text in the adjacent column would remain on the page), I don't see the theoretical reason to restrict this text flow possibility. As an example, consider a cell containing a drawing and its caption. Due to the difficulty to control precisely position and wrapping in this case, the drawing is anchored "As character" in its own paragraph so that it will always stay within the cell boundary (which is not guaranteed  with any other anchor mode, the drawing going possibly into the bottom margin and getting clipped by page limit). The drawing and the caption need to be linked by a "Keep with next paragraph" flag so that they are not separated.

Either it is an unforeseen bug or a restriction should be clearly stated in the documentation due to theoretical reasons.

In the attached A6 landscape sample document, second row contains:
- paragraph "Curabitur": keep with next paragraph
- paragraph "Donec": do not split paragraph
- rows in table are allowed to split (but behaviour is the same if they are not; text in cell is extended until overflow occurs)

All formatting is done with direct formatting in this sample.

Tested with LO 7.3.6.2 under Fedora 36 (Linux) with KDE Plasma desktop