As Hornett mentioned, the problem is NOT the magazine springs, it's a design feature.
The Europeans tend to be worried about losing magazines, leaving one with a single shot sidearm at an inopportune time. Therefore European pistol designs sometimes include design features to prevent the magazine from rapidly departing the pistol without assistance if the mag release is accidentally pressed. Americans tend to be worried about saving a second in a complicated stage during a "practical" pistol competition so they don't care if their mags to drop free if the magazine release is pressed.
To remedy the "problem", you can reach your finger up into the back of the magazine well. You'll feel a sheet metal piece that is loosely attached. Feel for the "seam" where the metal is slightly bent and press hard on the seam. Do that along the seam, maybe in a couple or three places and then try your magazines again.