Steps to reproduce:
1. Create a new video recording, preferable of a long video with an audio track that's not too loud.
2. Open the video editor, take a look at the audio waveform
The waveform is really tiny, vertically. The produced waveform image is 500px in height, but the waveform is only about 14 pixels in height (see the attached image).
The waveform should take up most of the vertical space in the picture.