Created attachment 172821 [details] Textbox with fat border Open attached document. It has a text box with fat border and is positioned with "Alignment relative to Margin" horizontally and vertically. In the lower part of the page is a screenshot how it look in Word. Problems: 1) Word aligns the outer edge of the border, LibreOffice the snap-rectangle, to the edge of the page text area. 2) Word measures the text padding from the inner edge of the border, LibreOffice from the snap-rectangle.
Created attachment 172822 [details] Screenshot Word - LibreOffice side by side
I confirm it with Version: 7.1.4.2 (x64) / LibreOffice Community Build ID: a529a4fab45b75fefc5b6226684193eb000654f6 CPU threads: 4; OS: Windows 10.0 Build 19043; UI render: Skia/Raster; VCL: win Locale: de-DE (de_DE); UI: en-GB Calc: CL in comparison with Word 2016
repro 7.6