This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
I just had some logging code written into explorer's tree cell renderer, and I noticed that whenever I pressed F9 to compile, Explorer repainted (even though nothing changed to warrant it). Filing against core/winsys for now - not sure who is triggering the repaint, but the first place to check is updating the status line. Using old, not new winsys.
Probably it was the icon being changed painting. Silly me.
issue doesn't apply to new window system - verified