**BUG** Concise problem statement: Sometimes left clicking inside and very close to the top left corner of a text box and then dragging the mouse to the right to select some text, drags the text (which is being edited) *behind* the box. Steps to reproduce bug: 1. Create a block of text on the schematic canvas. 2. Click outside the box to place it. 3. Re-open the text edit-in-place box. 4. Left click inside and very close to the top left corner of the box and then drag the mouse to the right to select some text. Results: Text in the box is selected (that's OK) but the text being edited *behind* the box is dragged with the mouse. Expected results: Text behind the box should not move. Url: n/a. Browser:Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/30.0.1599.114 Chrome/30.0.1599.114 Safari/537.36