New Post: Is it possible to write text?

I'm seeing this too. My code is on WP8. I am using Resize to resize a WritableBitmap. If I render a textblock onto the WritableBitmap that is returned from resize I get a black rectangle with my text drawn on top. If, however, I use WritableBitmap.SaveJpeg to create a stream backed by MemoryStream and then create a new WritableBitmap from that stream I can render a textblock and the image looks correct. Is there something I need to do to the WritableBitmap that returned from Resize??