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.
[custom build 20040601, JDK 1.4.2] Steps to reproduce: 1) Create project, don't set it as main 2) Invoke Run | Run Main Project 3) Select Cancel in opened dialog 4) Try to invoke Run | Run Main Project The menu is closed when mouse is moved to the 'Run Main Project' item. The same behavior is when doing e.g. Build | Build Main Project.
It's known JDK issue ... *** This issue has been marked as a duplicate of 35962 ***
Verified dupe.