I keep getting random indentation in my documents but I don't know why. The indent for left and right is set to 0 but the headings, paragraphs, first lines, following lines all have different indentation.

If I use ctrl+a and then set the first line indentation and "hanging indent" (on rulers bar) to 0 then the indent is still all over the place.

I can manually remove the initial indent on all of the paragraphs but some headings / paragraphs are still indented more than others.

I have been using the document in Libre Office as well so this could be something to do with that but it is a docx file.