When shutting down Windows, ACT will sometimes not close.

[EQAditu]

When shutting down, etc, Windows will close a random ACT window. If it closes FormActMain, it goes well. Any other window will simply hide when closed and "prevent" shutdown.

[EQAditu]

Release 265 will have a fix, where all 20+ normal ACT windows will pass along the close message to FormActMain. However, if a plugin creates a form and Windows picks that one to close, the bug will remain.

[EQAditu]

Plugins can help prevent this bug by using the logic in the following event handler:

private void MyPluginForm_FormClosing(object sender, FormClosingEventArgs e)
{
	if (e.CloseReason == CloseReason.WindowsShutDown)
	{
		ActGlobals.oFormActMain.Close();
	}
	else
	{
		e.Cancel = true;
		this.Hide();
	}
}