357161 - Column selector should grow to follow scrollbar width - rightmost threadpane and folder pane column truncated

Status: NEW

(Core :: XUL, defect)

Description

[Mike Cowperthwaite]

I've recently widened scrollbars and window borders on my system because I kept missing them with the mouse.  Generally, not a problem.  However, in TB, the column selector in the thread pane (and in the folder pane) maintains its original width (20px?).  Depending on which column is rightmost, this isn't necessarily a problem, but in my case, the Junk column is rightmost.  The result is that the junk icon in that column is truncated by the scrollbar 
width.

Steps to reproduce:
1) in Windows, right-click on desktop, Properties, Appearance
   click on scrollbar, change the Size parameter to something larger than 
   usual; I've set it to 30.
2) in TB, drag one of the iconic columns to the rightmost position, if
   necessary.
3) Examine column's appearance.

Actual result:
3) column is truncated

Expected result:
3) column appears full-width, which probably should be achieved by widening the column-selector button at the top of the scrollbar.

Comment 1

[Mike Cowperthwaite]

Attachment: Screenshot

Comment 2

[Scott MacGregor]

this sounds like a xul toolkit issue with our tree widget.

Comment 3

[Wayne Mery (:wsmwk)]

(In reply to comment #0)
> I've recently widened scrollbars and window borders on my system because I kept
> missing them with the mouse.  Generally, not a problem.  However, in TB, the
> column selector in the thread pane (and in the folder pane) maintains its
> original width (20px?).  Depending on which column is rightmost, this isn't
> necessarily a problem, but in my case, the Junk column is rightmost.  The
> result is that the junk icon in that column is truncated by the scrollbar 
> width.

I was certain there is a bug filed on the column truncation issue but I can't find it.

perhaps bug 407342 a dupe?