Android grave accent isn't shown on canvas, when hardware accelerate is true - android-canvas

Question

everyone.
This is my first question in stackoverflow.
I hope you understand my poor English.
I found strange issue on drawing grave accent on canvas. I have been testing that drawing text on canvas on android, then I realize that hardware accelerated canvas doesn't draw few grave accents.
Here is codes and properties.
hardwareAccelerated : true
canvas.drawText("\u0E36", 100, 100, paint);
canvas.drawText("isHardwareAccelerated : " + isHardwareAccelerated(), 150, 200, paint);
above codes doesn't draw \u0E36 character on canvas.
hardwareAccelerated : false, Unicode with space(or any string)
canvas.drawText(" \u0E36", 100, 100, paint);
canvas.drawText("isHardwareAccelerated : " + isHardwareAccelerated(), 150, 200, paint);
above codes draw \u0E36 character on canvas.
hardwareAccelerated : false
canvas.drawText("\u0E36", 100, 100, paint);
canvas.drawText("isHardwareAccelerated : " + isHardwareAccelerated(), 150, 200, paint);
above codes draw \u0E36 character on canvas.
I realized that when I set hardware acceleration true, grave accents doesn't shown without string.
but, if I put any characters or space just before the grave accent, it works.
and, if I set hardware acceleration false, canvas draws grave accents without any string.
My question is that why canvas doesn't draw grave accents when canvas is hardware accelerated?
I could guess it is related with hardware rendering and software rendering.
But I don't know exactly why.
here is what I want to draw on canvas with hardware acceleration.
It's Thai character. and I found some latin grave accents also doesn't shown on canvas.
http://www.unicodemap.org/details/0x0E36/index.html
My reputation points is 0, so I can't post pictures of them.
I hope you guys understand my poor English.