Basically due to the check over here:
https://github.com/Creators-of-Create/Create/blob/mc1.16/dev/src/main/java/com/simibubi/create/events/ClientEvents.java#L242-L243

The sequenced tooltip never gets added to non-create transitional items (which is done here: https://github.com/Creators-of-Create/Create/blob/mc1.16/dev/src/main/java/com/simibubi/create/events/ClientEvents.java#L268)

I'm not sure if it is intended to be able to transition to non SequencedAssemblyItem items, but the system seems to allow it, just doesn't show the tooltip (unless it is a create item).

Also other addons who may add more SequencedAssemblyItem items would not be able to show the tooltip.

Thanks for reporting, this should be resolved in 0.3.2b