Hi there,
seems i found a little glitch in your otherwise excellent Framework.
See the Scenario Thread here:

http://extjs.com/forum/showthread.php?t=49630

I finally found that the Problem is within the following function in Ext:

Code:
focusCell : function(row, col, hscroll){
        row = Math.min(row, Math.max(0, this.getRows().length-1));
        var xy = this.ensureVisible(row, col, hscroll);
        this.focusEl.setXY(xy||this.scroller.getXY());
        
        if(Ext.isGecko){
            this.focusEl.focus();
        } else {
           this.focusEl.focus.defer(1, this.focusEl);
        }
    },
This is what caused my self-rendered-Html-Elements to "flicker" as described in my other thread. The Dropdown receives the Click, opens and stays open for the Millisecond until
Ext calls back and gives focus to the Cell, causing my Drop-Down to close again.

Btw, this happens with textboxes etc too...


Proposed Solution a:
Replace the Browser-Detection-Block with the following:
this.focusEl.focus();
This works fine for my special little grid.... might have sight effects i can't see right now.

Proposed Solution b:
In the RowSelectionModel modify the "handleMouseDown" Function and
remove the "focusRow" - Calls.
Works like a charm too.

Code:
// private
    handleMouseDown : function(g, rowIndex, e){
        if(e.button !== 0 || this.isLocked()){
            return;
        };
        var view = this.grid.getView();
        if(e.shiftKey && this.last !== false){
            var last = this.last;
            this.selectRange(last, rowIndex, e.ctrlKey);
            this.last = last; // reset the last
            view.focusRow(rowIndex);
        }else{
            var isSelected = this.isSelected(rowIndex);
            if(e.ctrlKey && isSelected){
                this.deselectRow(rowIndex);
            }else if(!isSelected || this.getCount() > 1){
                this.selectRow(rowIndex, e.ctrlKey || e.shiftKey);
                view.focusRow(rowIndex);
            }
        }
    },
Hope this post was useful to somebody,

Greetings,

Mjollnir