Hi,
the issue occurs only if series.Marker.Format.Fill.FillType is set to a value other than NotDefined.
I attached a test app for reproduction.
AsposeSlideMarkerBug.7z (9,5 MB)
This May be a duplicate of Saving a Pr…...slides-net , slides-chart jaenichen May 8, 2025, 11:14am 1 Hi, the issue...AsposeSlideMarkerBug.7z (9,5 MB) This may be a duplicate of Saving a Presentation...