OMG! I just fixed my issue. I changed the device driver from Generic Z-wave smart Dimmer to Generic Z-Wave Dimmer and it fixed my issue.
Even thought according to the release notes my Leviton Switch should be using the smart dimmer. It had been using that for a while so something must have changed on the driver.
I found this because I noticed the recently my switches weren't updating state on Sharp Tools, so I went into my devices and sure enough, they were showing off in HE but the they were on. Just at a dimmed level.
