I’m a very lucky guy. Yesterday evening just at my door the right handlebar felt a bit weak. I checked the clamp, then it broke.
Today I replaced the handle bar with the straight one when I saw the crack in the left handle bar at exactly the same spot. This proves that it’s not an accident.
So, if you have the riser type handle bar on your Strida, visit a mechanic ASAP!
Best luck to everyone!
(Sorry for not posting the images. I’d have liked to but it’s too much of a hassle here.)