This is split from bug 137691 The attachment 166646 [details] contains a line chart with two data series. The blue one has square shaped markers set, the black one has automatic markers set. In LO the black one does not appear with markers visible. 1, Open attachment 166646 [details] in LO and PP 2, Notice the black line in the chart as seen on attachment 166647 [details] Version: 7.5.0.0.alpha0+ (x64) / LibreOffice Community Build ID: 4ca5c021c91680f1a5df47225d9cb0d41c0a8637 CPU threads: 14; OS: Windows 10.0 Build 19044; UI render: Skia/Raster; VCL: win Locale: en-US (hu_HU); UI: en-US Calc: threaded Happens in several versions back to 4.2.
Confirm with Version: 7.5.0.0.alpha0+ / LibreOffice Community Build ID: e46f9cc4b506c325cbe1060777bbc81fd1630f49 CPU threads: 4; OS: Linux 5.15; UI render: default; VCL: gtk3 Locale: cs-CZ (cs_CZ.UTF-8); UI: en-US Calc: threaded and Version 4.1.0.0.alpha0+ (Build ID: efca6f15609322f62a35619619a6d5fe5c9bd5a)