notification volume is tied to media volume, not notification volume. the temp work around I have is (using Quick Settings) check the box that links Ringer volume for notifications. This is a work around provided you are using ringer volume on max.
I cross posted this on xda with links to htc forums and a facebook thread. I encourage others to find ways to let htc know.
I cross posted this on xda with links to htc forums and a facebook thread. I encourage others to find ways to let htc know.