Rendering of paragraph border if page break is inside paragraph

[Regina Henschel <rb.henschel@t-online.de>]

Hi member,

the attached zip-file contains a text document that has a page-break 
inside a paragraph which has a border. The document was created in Word 
365 and saved to .odt by Word. The zip-file has in addition a lot of 
screenshots, how this is rendered in some applications.

I see two behaviors:

(A) In Calligra, Textmaker and LibreOffice the two paragraph parts both 
get the full borders.

(B) In Word and Google Docs the paragraph part on the first page has no 
bottom border and the part on the second page has no top border. That 
kind of rendering is used too, if you use a similar file in HTML and let 
it print by a browser.

I was not able to decide, which is the 'correct' rendering.

But in CSS3 I see a solution. 
https://www.w3.org/TR/css-break-3/#break-decoration. The property 
box-decoration-break specifies exactly these two behaviors. Its value 
"slice" corresponds to version (B) and its value "clone" corresponds to 
version (A).

The fact that such a property was added to CSS3 suggests to me that the 
description in CSS2 was not sufficient (and it was not my inability, 
that I could not decide 'correct' rendering).

This property also effects the background of the paragraph. But 
LibreOffice seems to be the only one, that supports an image as 
background of a paragraph; so no comparison possible.

What do you think about adding an attribute box-decoration-break? It 
would effect the inline-boxes too, which belong to feature request 
OFFICE-3843.

Kind regards
Regina

Attachment: BorderProblems.zip
Description: Zip compressed data