Created attachment 198082 [details] An ODT that both describes + contains this Bug. The bottom border of a Sidebar (a frame that contains text) will coalesce with the top inline-border of a paragraph. In other words, the below-frame spacing of the frame will be added to the internal top-spacing of the next paragraph, rather than being placed between the two entity’s borders. This is almost certainly a dupe of 164297 and of 164298. An ODT + PDF that both describe + contain the bug are included within Python3Docs (see bug5.odt + bug5.pdf within https://github.com/alexkemp9/Python3docs).
Created attachment 198344 [details] An ODT that both describes + contains this Bug, updated from the original. A SideBar (a Text Frame) “Interferes” with adjoining borders. The bug actually occurs with *anything* that is framed and is positioned next to something with a border. The interference ranges from changing bottom- or top-spacing, and can be minor or become splitting off embedded borders from the text to which they are supposed to be attached. The clearest demonstration of the bug is when the below-frame spacing of the text frame is added to the internal top-spacing of the next paragraph, rather than being placed between the two entity’s borders, due to the 2nd entity being a blue-bordered text paragraph. An ODTs + PDFs that both describe + contain the bug are included within Python3Docs (see bug05.odt + bug05.pdf and bug05+.odt + bug05+.pdf within https://github.com/alexkemp9/Python3docs).
Confirmed. As a general note, long explanatory documents such as the one you attached do not add value to reports and may instead lead to testers ignoring them. If I were you, I would have attached a one-page example document with nothing more than the "the most blatant demonstration of the bug" and explained the issue as briefly as possible in the first comment (not inside the example document). Additional cases could have been added in a separate doc and the notes and "how to produce" clearly separated from the issue description, lower in the info hierarchy in the Bugzilla comment(s). Arch Linux 64-bit Version: 26.8.0.0.alpha0+ (X86_64) Build ID: 640a35801612123fa503fa72e8732cfb7e75caca CPU threads: 8; OS: Linux 6.18; UI render: default; VCL: gtk3 Locale: fi-FI (fi_FI.UTF-8); UI: en-US Calc: CL threaded Built on 23 December 2025