Flashlet not working in Chrome

Hello,

using SmartClient Version: v9.1p_2015-01-21/Pro Deployment (built 2015-01-21)

we have a page in which a flashlet is included.
Basically a 360 view of a bicycle with buttons to rotate and zoom the bike.

In google Chrome, the flash loads and rotates one time automatically,
but after that, the navigation buttons to rotate or zoom the bike do not work.

It works in FireFox.
It also works in Google Chrome with a plain html <object><embed ...> approach.

So it seems the flashlet is broken for Google Chrome.
Chrome Version 39.0.2171.99 m

Best regards,
Daniel