Yes, and it aggravates my gear-OCD horribly. I never had any function issues* loading them with 12, but I stick with 11. So it's only a +1 for me, but also a happy place for my pinky that facilitates a fast draw.
*I should note that the G26 is my duty backup, carried in an off-side cargo pocket holster; thus, the magazine catch is facing out. The only times I drew the G26 at the end of shift and found the mag not seated were when it was loaded with 12... Apparently, the spring tension with 12 is so high with that it wants to bust loose with casual pressure on the mag catch. I haven't tested this outside of the pocket for educational value, because I'm content to load it with 11.