Can't record audio before an existing recording

Can't record audio before an existing recording

STEPS TO REPRODUCE

1. Add an audio record track
2. Record audio near the end of the track
3. Record audio before it on the same track

OBSERVED RESULT

Audio record appears to function normally, no errors are given however, and no audio clip appears in the track.

EXPECTED RESULT

After audio recording a audio clip should appear in the track.

ScreenGrab: recocord

Bug: https://bugs.kde.org/show_bug.cgi?id=408108