Audio glitches on cross fades and fade up/down

I'm getting audio glitches on audio crossfades.

Audio is from a 48K 16 bit WAV files (actually audio came from Adobe Enhance Audio website.) Content is voice.

I'm generally using 1 frame crossfades or 1 frame fade up/down to smooth out audio editing.

On playback, the glithces are there intermittently and sometimes it sounds fine. However, the glitches are there in the exports. I had 9 crossfades in this timeline. Everyone had a glitch in the export.

1. Version of the app: 24.5.0 (Build 57)
2. Platform and OS version: Mac Ventura 13.6.7, M1 Max

I'm attaching a screenshot of a fade down that sounded glitchy. These were originally 1 frame transitions. I tried changing to 2 frame transitions and the audio still glitched on export. However, I was more likely to hear it clean on playback with the 2 frame transition.

Here's a waveform and spectrum view of the exported audio from that section of the timeline. The glitch is the spot where the marker is --note how the whole spectrum lights up there. This full spectrum glitch is not in the original audio--only on the export.

Here's a section with 2 audio crossfades in the timeline.

 And here's the corresponding spectrum view with the glitches marked. These glitches correspond to where the two crossfades are in the timeline.