As the headline suggests, when I search for, and click on the PS4 EU edition of Watch Dogs Legion, it brings up the US version.
The few times I've managed to actually bring up the EU version, it almost always changes back to the US.
I don't know if it's because the description in the EU version is in French, and my computer automatically translates French into English.
As soon as it does that, it jumps to the US version of the game.