Do you have auto trimming on the FD? I see it is moving a little when you go up and down on the cog.
Seems like it but not sure if this in anyway may infringe Shimano's patent but no issues with shifting in casual mode.
However in casual mode, the system seems to auto prevent shifting last 2 gears on either sides of the chainring to prevent cross-chaining; ie. Lager ring cannot last 2 biggest gears while small ring cannot use the front 2 smallest.
There is a Racing Mode which I believe shifts faster without the gear lock. That will also use up more power so more tests shall reveal it all.