^^^ My same problem exactly ^^^
After making it a mission to figure out what exactly was causing my problem.. (The same problem the op stated) It was obvious it is not the bolt catch malfunctioning. The bolt catch is just fine and doing its job. However the bolt its self has been worn down and is causing the malfunction.
In these pictures you can see that the face on the center ridge is worn. There is a good amount of material missing. This worn edge is allowing the spring to shove the bolt forward past the catch and lodging it between the two groves. This makes it so no matter how hard you push the bolt release it will not budge because it is actually inside the grooves.
Now my questions are: Would S&W replace the bolt for me? and if so, do i have to send the entire rifle to S&W or just the bolt carrier group?