Triple crank, extra click while downshifting I have an Ultegra triple crankset and shifters on a Giant road bike. When downshifting from the outer ring to the middle ring it requires an extra click.

I've experienced this on several triple chainring bikes that I've owned and wondered if it is just the nature of a triple or if I'm out of adjustment somewhere?
Some shifters have an extra click that is used to 'trim' the front derailleur as the chain moves across the cassette.  This is to eliminate the noise of the chain gently rubbing the plates of the FD.

This data sheet for an Ultegra 6700 shifter has a section to explain this feature:
https://si.shimano.com/pdfs/si/SI-6SC0A-002-ENG.pdf