Vibe 4.0 Landing Page Edition - Size problem

Hi All,

After successfull upgrade from Vibe 3.4 to 4.0, a simple but very disturbing problem appears.
When you have, in the landing page construction, a relatively large (horizontally) table (let's say more than 3 columns), you can't anymore manipulate elements on the right.
It is like the landing page building view width is fixed.
An screenshot sample is attached. It occurs with both Chrome 42 and IE 11.

Please tell me if i am the only one with this problem and/or if a workaround exists.

Many thx in advance

francois