FabFilter

I think there might be a bug in Twin 3; when switching presets, it seems like the on/off state of the arpeggiator is inherited from the previous preset. When I load Twin 3 with its default sound and choose a preset from the "arp" section, I expect the arpeggiator to be on, but it isn't. If I turn it on manually, and then switch to, say, a pad preset, the arpeggiator is still on.

Windows 10, Ableton Live Suite 11.2

This is controlled by the lock button in the arpeggiator panel. If locked, the arpeggiator will stay enabled or disabled when changing presets. Otherwise, it will pick up the setting from the preset.
www.fabfilter.com/help/twin/using/arpeggiator

Cheers,

We just discovered though that the default preset erroneously has Lock enabled. This keeps the arpeggiator disabled when going through the Arp section, unless you first unlock the arpeggiator. We'll fix this in an upcoming 3.01 update.

Cheers,