[DCP-o-matic] about duration and number of frames

Hello, sometimes one picture speaks better, so it's attached. It's DCP-o-Matic 1.65 There are two surprising things : - it's a 9 seconds long video, made of 216 .png frames, 24 fps. As you can see on the right the progress playback bar ends at 179 frames / 7 seconds and ten frames. I can see that with other / longer contents too : preview and progress bar don't go to the "real" end of the content (only 3439 frames with a 2 min 18 seconds 19 frames trailer in /25/fps, where 3469 expected) - Here I have used images sequence + one 5.1 wav file. Opened with Audacity, this sound lasts 9 seconds and exactly 216 frames. DCP-o-matic seems to find one more frame, and if I cut one frame from the end, it displays 8 seconds and 24 frames : is that any different from 9 seconds ? I have noticed another thing that won't show on the picture attached : - if you change the DCP frame rate, durations are not immediatly updated, you have to switch between tabs back and forth to see updating. - there is no warning if sound and number of frames are not same duration - intended ? Best regards, Gérald