Clusters in Waveform View Unaligned

I identified all of the good clusters in a data set, partially by using the WaveformView to to identify clusters with clean consistent waveforms. However, just as I started merging clusters, all of clusters in WaveformView spontaneously unaligned themselves. Instead of seeing checkmark shaped curves of spikes, I see disordered lines with individual peaks not allied to each other. When I press 'M' to see the average waveform, they still have normal waveforms shaped like they were before. The correlagrams and other window views still indicate that the clusters are good.

I do not know why Phy spontaneously started displaying waveforms like this. Right before I was having a similar problem but only when I merged two clusters. I overlaid two clustered in WaveformView and they looked similar. But when I merged them none of their peaks were aligned and the waveform looked terrible. Even though the correlagrams continued to show a good cluster. Pressing 'M' to see the average merged waveform shows a noisy poorly shaped waveform.

Does anyone know why the WaveformView is not alining the spikes within clusters?

Start by reproducing the problem in WaveformView, including viewing the average waveform with M and merging two clusters, then compare the displayed alignment with the correlagrams. The issue is resolved when clustered spikes remain aligned after merging and the average waveform agrees with the other views.