The only difference between your signals is that delay section which ends up have little effect on the demodulated signal. The MSK Pulse Generator is probably hard codes to output the 0 signal for the first bit period while the delay component does not work like that.
If you really want the exact same signal you could use an electric multiplier as in the attached project to force it to 0. I multiply it by a bit sequence of “011111111” because I changed the total bit sequence to a longer one.