Thank you for trying and being able to reproduce the problem. After a couple of attempts, I've been able to narrow the problem to two issues.
In reply to Re^2: A question on using Tk::ItemStyle in Tk::Tree
by Anonymous Monk
in thread A question on using Tk::ItemStyle in Tk::Tree
by Anonymous Monk
| For: | Use: | ||
| & | & | ||
| < | < | ||
| > | > | ||
| [ | [ | ||
| ] | ] |