[4.0.2a (3)] Custom Theme breaks Scroller

[stevil]

I thought this was code - between 4.0.1 and 4.0.2, the paginggridscroller on a Grid stopped working.

Spent considerable time in the debugger to find that in 4.0.2, with my own theme, that the scroller child DIV (-ct) is positioned nowhere near the actual scroll bar. As a result, when you move the scroller, nothing happens.

This behavior does not take place in 4.0.1, or in 4.0.2 if I use ext-all.css.

Comparing it to my generated theme, I notice the following is in ext-all, but not in my theme:

.x-scroller-ct {
    overflow:hidden;
    position:absolute;
    margin:0;
    padding:0;
    border:none;
    left:0px;
    top:0px;
    box-sizing:content-box !important;
    -ms-box-sizing:content-box !important;
    -moz-box-sizing:content-box !important;
    -webkit-box-sizing:content-box !important
} 

There may be others - I didn't do an exhaustive comparison.

For reference, I cleared my .sass-cache folder and recompiled the theme.

stevil