I have modified my virtual printer to report this
15:30:26.642: T:147.00 /147.00 B:20.00 /0.00 T0:147.00 /147.00 T1:0.00 /0.00
15:30:27.642: ok
15:30:27.642: T:147.00 /147.00 B:20.00 /0.00 T0:147.00 /147.00 T1:0.00 /0.00
15:30:28.647: ok
15:30:28.647: T:147.00 /147.00 B:20.00 /0.00 T0:147.00 /147.00 T1:0.00 /0.00
15:30:29.665: ok (3)
15:30:29.666: T:0.00 /0.00 B:20.00 /0.00 T0:147.00 /147.00 T1:0.00 /0.00
15:30:30.659: ok
15:30:30.659: T:0.00 /0.00 B:20.00 /0.00 T0:147.00 /147.00 T1:0.00 /0.00
15:30:31.684: ok
15:30:31.684: T:0.00 /0.00 B:20.00 /0.00 T0:147.00 /147.00 T1:0.00 /0.00
15:30:32.689: ok
15:30:32.690: T:0.00 /0.00 B:20.00 /0.00 T0:147.00 /147.00 T1:0.00 /0.00
but I could not reproduce the problem. Since we recently changed parsing I will wait for you to confirm you are running 0.90.6 - if not please update and report if it helped.