txt messages arent marked as read

[Brett8187]

Ever since i went to the sprint update rom 6.0 if your in the threaded txt mesasge window aka like you sent them a text message then they respond while your still in that window, if you close it the messages arent marked as read. Anyone know how to fix this? It pisses me off because ill txt someone back and forth for 10 messages then close the window and i it says i have 10 unread. ugh

Thanks

ps: if nobody knows a fix is there anyway to disable the light notification of a new message? I checked in the settings but its greyd out and you cant stop it