Yup, max pixel numbers are +/- 8192 or so.
I finally got back to this issue and I found a solution, although I have no idea why it works. Maybe someone can enlighten me. I'm trying to draw a red background 15000 pixels wide.
In the code above, if <List> is given a width, then the red background is drawn completely from end to end. Here's what works:
List right="0" left="0"
What doesn't work:
The scrolling works at the full 15000. It's just that the red rect with a unspecified List width is for some reason not displaying for the full item renderer width; it goes only up to 8190.
Me thinks there's a bug in there somewhere.
Possibly, but in the first case you are specifying percentWidth=100 so that
defines the width to fill the container.
In the second case, you are not specifying a width at all, just bounds on
the computed width.
I literally just installed 10.1.53.64 this morning and the issue is gone altogether. I was running some 10.0 version. Sweet!