Hi, I’m runing Linux with dark theme.
When I launch liboffice writer, police colours look OK, see captures, but as I load an old document they change, making some menu unwatchable.
Do documents load User Interface datas ?
Do you mean the sidebar and its style preview? Please check if your styles there in old documents use explicit colors, like “Black” text instead of “Auto”. When the text color is fixed dark, it can’t be shown as a bright color on the dark background. The same would happen in light theme, if you used white font color there.