In my current version this more extensive dialogue only appears for the Brush tool, not the Paintbrush tool. I cannot explain this disparity, maybe a Fiji developer can.
Note that I now updated to the latest IJ daily build and the macro from Jan still runs fine.
EDIT: I was able to reproduce your error @Herbie! Although it might not have been the same sequence of actions… And it appears to be a strange bug, or at least confusing.
If I select
Drawing Tools in the
More Tools menu I get:
Despite still seeing the paintbrush tool on the menu, but the options dialogue is slightly different (missing the (pixels)).
(We can split this topic if the discussion continues, so far the information is relevant to OP’s question, should he run into similar issues.)