With just a few simple key combinations you do not have to draw the lines between the nodes anymore when inserting a new style!
Ctrl/Alt/Shift + Double-click now works similarly as in the Compositing view:

On the PC
 
In the Style Browser, to insert filters into the Style Editor:

Double click/Enter on a Style: it does not replace the whole graph (as in the Compositing view), it just adds the filter to the graph, as it did before (and does not connect it).
 
Ctrl + double-click/Enter on a Style: overwrites the selected filter and automatically connects the pins
Shift + double-click/Enter on a Style: inserts above the current filter in a new layer and automatically connects the pins
Alt + double-click/Enter on a Style: adds the style to the right side of the filter (after - in chain) and automatically connects the pins
 
Ctrl + Shift + double-click/Enter on a Style: inserts the style below the current filter  and automatically connects the pins
Ctrl + Alt + double-click/Enter on a Style: inserts the style at the left side of the layer (before - in chain)  and automatically connects the pins
 
 
 On the Apple Macintosh┬«
 
There are several different keyboards available for the Apple Macintosh®, but not all of them have the same combination of Cmd, Ctrl, Alt, or Option. However, in PostworkShop, the following keys are interchangeable, even if you have to use the FN key to access them:
  Ctrl = Cmd
  Alt = Option
 
Key combinations that work both on PC and Mac
 
Ctrl + Z: undo
Ctrl + Y: redo
Delete: delete and backspace both work on either the PC or the Mac as expected.
 
You can easily "jump" from the Style Editor to the Compositing view by pressing the Tabulator.