PDF Reports and Thai Tone Marks rendering

[gaizers]

we have a issue when the report PDF renders Thai tone mark characters (as show in the image)
usually there should be 2 layers, but both tone marks are rendered on one layer.

we render with: birt-runtime-4_4_2

[wimjongman]

Please try with the latest BIRT runtime 4.12

https://eclipse.org/birt

[gaizers]

try with BIRT runtime 4.12, result are same issue.

[Rukyee]

I have same your problem.
Can you solve this problem ?

[hvbtup]

AFAIK all active committers use more or less latin character sets, none of them has an understanding of the intricacies of rendering text in asian languages. So probably it would be best if you dig in the source code yourself and determine what's wrong there.