Sorry, I cannot confirm that this is an issue to be resolved, and I do not hear any jumping in the LFO phase when I adjust the rate parameter. It sounds natural to me.
There is a performance parameter “Retrigger” that will reset the LFO phase. This is a very abrupt sound that is easy to hear, and that is not what is happening when you adjust the LFO rate.
If you can record a video of the issue you are hearing and send it to support@eventide.com, that may help us determine what you are experiencing.