Timing bug: Beginning of phrase overlap?

Several posts in the discord mention some timing errors. there seem to be a couple with differing cases, but narrowing down one here; I noticed that specifically beginning of phrase aliases such as - C/`- CV`/`- V`, will cause abrupt skipping and cutting. My guess is that this could be due to the preutterance exceeding the bounds of the previous rest and into the prior phrase/note.

This is particularly easy to reproduce on slowly uttered VCV vocals; Seuri, Hibiki Shinji, etc. Several CVVC vocals I had also caused this, but old school CV banks with shorter consonants did it much less, and not at all on slower tempo songs.

It could also be something different entirely of course, but I wanted to make sure this pattern of occurance was mentioned somewhere.