Solved.
I was using a small image that I would stretch to 100% width in each
tab to give emphasis to the selected tab. I have removed this image,
and added a border-top property of the same colour to the iframe.
Removing this image from inside the tab (above the iframe) solved the
problem; 1.7 is
Update:
I have narrowed the problem down to a css change I made.
Original:
.ui-tabs .ui-tabs-panel { padding: 1em 1.4em; display: block; border-
width: 0; background: none; }
Modified:
.ui-tabs .ui-tabs-panel { padding: 0 0; display: block; border-width:
0; background: none; }
This change did
