Weird stuff with Revit Line Weights

Following on from my previous post about line weights for material patterns, I have found some more weird things about Revit line weights that I never knew before:

1.  Pattern Line Weights

As Frank Giorlando rightly pointed out in a comment on the previous post:  Ceiling surface patterns use Line Weight 2.  So, if you want to control those independently, you should start your regular line weights from #3.
Thanks for that tip, Frank.

It would not surprise me if there are other categories that use different line weights again.

2.  Apply Button

The “Apply” button on the Line Weights dialog box does not appear to work – so if you start changing settings for different scales and want to check what happens (with hatching lines for example), you have to click OK to close the dialog box to see the effect.  I wasted a bit of time making changes that did not seem to be having any effect before I realised.  (as of Revit v2016 R2)

3.  Grid Line Weights

In testing the previous bug, I discovered some more weird settings:
Gridlines have all sorts of hidden away weight controls –
Unlike most elements, the actual grid line weight numbers are controlled from the grid Type properties (not from the Object Styles settings).  However, the Grid Heads have a master control in Object Styles where you might expect the gridlines to also be controlled…