When I set the metronom count in to 1234-1234 only the second measure is interpreted correctly.
It's definitely a bug. There are some 14 different count-in patterns, among them patterns such as '1-3- 1234' and of course '1234 1234'. While raymb1 likely nailed it, a program offering above options should stick to its selection.
Interestingly enough, selecting '1234 1234' or '1-3- 1234' the visual count-in says '1-2- 1234', very much along the traditional lines raymb1 mentioned.
RealDrums mostly follow the selected patterns and are thus likely not pre-recorded, only during the first bar they stick to the traditional '1-3-' pattern, irrespectively of any selected pattern.
It should be an easy fix for PGMusic.