SUMMARY

Mix clip (Select both audio clip and press U key) for audio track is reversed in 2nd and 4th time.

STEPS TO REPRODUCE

1. Import testkdenlive.mp4 and drag it to the timeline
2. Use Shift+R to split it twice, delete the clip in the middle and remove the blank space
3. Select the remaining two clip and use shortcut U to create a mix clip
4. Try playback, in this time it behave normally
5. Repeat step 2 and 3 to create another clip mix next to the previous mix clip
6. Try playback / see the result.

It's hard for me to describe in text so I also recorded a video to reproduce this issue.

OBSERVED RESULT

At step 6, you will hear reversed clip mix instead of the same result as you can get in step 3.

EXPECTED RESULT

At step 6, you will hear the same result as you can get in step 3.

SOFTWARE/OS VERSIONS
Tested both on Windows with 22.04.0 and Arch Linux with 22.04.0 and git-master.

ADDITIONAL INFORMATION

After step 6, if you repeat step 2 and 3, you will get the same wrong mix clip at 2nd, 4th, 6th time you repeat the steps.