I have two LZW45 light strip hooked up to my hubitat and I have a red series on/off acting as a scene controller that starts a startLevelChange on hold down and a stopLevelChange when released. One of them works as expected, however one of them acts a bit weird.
When it dims all the way down with startLevelChange down and the receives a stopLevelChange it returns to full brightness. This can be replicated in the device settings in hubitat using the buttons there. Do a level change down and wait for it to be fully dimmed and then click stop level change.
EDIT: Submitted a ticket and they just had me factory reset it and it is functioning correctly now…