Instead of the confusing toggle button, now the Controls bar for the Dropper tool has two checkboxes, "Pick alpha" and "Set alpha", which work as follows. Suppose you have an object selected and, using Dropper, click on an object which has red (#FF0000) fill and 0.5 opacity (half-transparent).

- If the "Pick alpha" checkbox is off, the selected object will get the fill color #800000 (i.e. faded-out red) and fill opacity will be at 1.0 (opaque).

- If the "Pick alpha" checkbox is on but "Set alpha" is off, the selected object will get the fill color #FF0000 (red) and fill opacity will be at 1.0.

- If both "Pick alpha" and "Set alpha" are on, the selected object will get the fill color #FF0000 (red) and fill opacity will be at 0.5 (half-transparent).

If you Shift+click instead of click, the same changes will be made to stroke color and stroke opacity, correspondingly. Note that in no situation can Dropper change the master opacity of the selected object(s), although it can pick it just as it does any other kind of opacity.