Problem with Vertical Text with Chinese Font with Phonetic Symbols

I encounter some problems with Chinese vertical text with Phonetic Symbol font

The layout is lifted to the lower right and block part of the character

Besides, in editing mode, the cursor position is not correct

Do anyone know how to solve these problems?

The following are the properties for my text (in a 200x200 canvas with black border):

textFlow.fontFamily = "testfont_01";

textFlow.fontLookup=FontLookup.EMBEDDED_CFF;

textFlow.renderingMode = RenderingMode.CFF;

textFlow.blockProgression=BlockProgression.RL;

textFlow.justificationRule = JustificationRule.EAST_ASIAN;

Attached with the result screen shots