I have created a program creating thumbnails from PPTX created by anyone.
I found when TextFrameFormat.TextVerticalType is TextVerticalType.EastAsianVertical or TextVerticalType.WordArtVerticalRightToLeft, these value are not applied to thumbnails.
The first attached file is PPTX file.
The second attached file is a image created by Microsoft Powerpoint.
The third attached file is a image created by Aspose.Slides.
The first shape from the left and The second from the right are TextFrameFormat.TextVerticalType is TextVerticalType.EastAsianVertical.
The second from the left and The first from the right are TextFrameFormat.TextVerticalType is TextVerticalType.WordArtVerticalRightToLeft.
Could you fix if it is a bug?
Appreciate your help.