Loop playback doesn't count pauses on end of measure

Hello!

Szenario

For study-purposes, I've created some very small scores with basic frame-drum notations.
Now, 1st for testing the scores and 2nd for training the scores with my drums, I mark the stave and select the loop playback.

Problem

The playback ignores the timing of the last rest. In my attached sample, it loops with 7/8th instead of 4/4th

You can see the effect watching the blue cursor while playback. If you turn the metronome on, you'll hear that the beats are not 4/4.

Question(s)

Is this a bug or did is misconfigure something?

Regards
Edy