The only problem with suggesting that the European release has been postponed due to a serious issue affecting the GR86 is that they are still being sold and delivered in the US and Japan, which are far larger markets than the EU/UK for this car.Toyota build hundreds of thousands of cars for the U.K./European markets this problem won’t be some simple oversight of a regulation it will be fundamental manufacturing faults with components that are sub standard. A bit like the wheels that can fall off the new electric Toyota. During the industry crisis they will have been sourcing components from new suppliers and I guess some stuff is just not up to specification. It’s a worry buying any new car at present just how good are some of the parts.
Considering that production of the cars hasn't stopped and they are still delivered, I think it is something to do with emissions or other EU regulations, possibly involving the GPF if rumours are to be believed.
To keep this on topic, my car is still showing as Build In Progress since its changed the status to that a week ago.
