It would be just a tad bit quicker to find something in the Widget Tree if a widget on the screen editor had a context menu option to "Find in Widget Tree" that way you don't have to open the Widget Tree first, it just auto-opens to the Widget Tree and auto-focuses the widget, simply by selecting the context menu option.
I agree. Better search would be great. Having worked in other IDEs I find it very convenient to have a separate search box for different views and editors. Currently, If I'm not missing anything we have just one searchbox on the top right corner.
Changed the category to Frontend