Created attachment 199634 [details]
Example file from Writer

Attached document has a textbox positioned at the bottom of the first page and set to None wrap.
When a footnote is inserted at the first page, the content below it is broken to the next page, because the textbox has None wrap and it would be in conflict with the new footnote.

1. Open attached document
2. insert a footnote into the first few paragraphs
-> the paragraph with the footnote is now broken to a new page, creating a lot of empty space.

Version: 25.8.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 36a6bf8bd65e2ece92a4354e9f6d8e47e0f03d84
CPU threads: 14; OS: Windows 10 X86_64 (build 19045); UI render: default; VCL: win
Locale: hu-HU (hu_HU); UI: en-US
Calc: threaded

and back to 3.3

In comparison, when the document is saved as docx and opened in Word, the footnote goes into the background of the textbox and is not considered as content affecting the None wrapping of the box.