Short waveforms rendering differently in v7 vs. v6

[katspaugh]

Discussed in #3885

^{Originally posted by giilby September 28, 2024}
After upgrading from v6.6.4 to v7.8.6, I noticed that waveforms for short audio clips are rendering much differently when in a wide container. To start, here's a comparison of old vs. new for narrow containers:

v6:

v7:

When the same clip is rendered in a wider container (around 1800px):

v6:

v7:

The audio clip is 5 seconds long, and I've configured WaveSurfer with these size-related properties:

{
  cursorWidth: 0,
  barWidth: 1,
  barGap: 1,
  height: 40,
}

It seems like the old renderer was repeating bars to respect barWidth and barGap in scenarios like this, but maybe something else is going on. I reviewed the config options but didn't see anything else that seemed to be related. Any idea what's going on here? Any additional information I can provide?

Thanks!