Shift notes screen compressed

Hi,

This issue just came up after our system  got upgraded to EHP7.

The screen shot below of Shift Notes SHN2 before upgrade. As can be seen that fields are spread about on the screen with no horizontal scrolling. The tabs used are 091, 130 and 131.

After upgrade the same screen appears as follows. As can be seen that whole screen is halved almost with a horizontal scroll bar appearing:

The other hidden part is visible when scrolled on the right using the horizontal scroll bar:

any ideas how can that be fixed?

Thanks

Faisal