This is happening in a Word document (.docx). I added a couple of new lines and tried to put a bottom border on the first line because it’s a heading of sorts. The bottom border will only display if it is not 0.5pt. It will display at 0.5pt if I turn on one of the other borders, or change the color or line style. But if it is a normal solid line, black, with 0.5pt, then it disappears entirely for no reason, even though the bottom border is still enabled. This is in paragraph style settings.
If I pick a random line elsewhere in the document and attempt the same thing, it works fine. So I reset the paragraph style of the line in question to the default style and tried again, but it still does the same nonsense. Anyone have any ideas what is going on here?
This is happening in Libre Office v126.96.36.199 (x64).