After much pain and strife, I solved the problem. As I suspected, it was not the part of any of my code. Rather, it was a configuration issue, my own fault, not the upgrade's.

First, there were some other symptoms that turned out to be related to the problem.

  • Qt applications would show up incredibly huge. This was not a big problem, nor did I notice it right away because I seldom use those programs.
  • Some Tcl/Tk programs exhibited the same behaviour as the Qt programs. The also showed the scrollbar wierdness that I originally saw.

    After thinking about this for awhile, I realized that I had been mucking with my X configuration a little, but I had dropped it and never finished with it. Since my oft-used applications were not affected, I didn't link it to the problem. But, upon removing  Load  "xtt" from the "Module" section of my XF86Config, all of the problems vanished.

    Ah, lessons learned.

    See you, space cowboy

    In reply to My Solution by mullr
    in thread Tk, perl 5.6, and scrolled by mullr

    Title:
    Use:  <p> text here (a paragraph) </p>
    and:  <code> code here </code>
    to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.