noticed something annoying when using the manual mode. Driving about 35 mph, shifting into 5th gear and it wont let me upshift BUT if i shift to drive and then back to manual to check what gear the car is on, it shows 5th gear. Same thing happens from 3rd to 4th as well. I try to upshift several times and it wont do it, but switching to auto and checking shows a higher gear was selected by the car automatically. whats up with that? I always drive with ECO on, is that a potential issue?