<tooltip-delay> in zk.xml has no effect

[Kurti123]

I was trying to reduce the time it takes for a popup to appear using the following setting in zk.xml, but it does not have any effect whatsoever:

<zk>	
	<client-config>
		<tooltip-delay>15</tooltip-delay>
	</client-config>	
</zk>

Tested with latest Edge browser and ZK 10.0.0 CE

See also:
https://forum.zkoss.org/question/84734/how-to-reduce-delay-time-of-tooltiptext/?answer=85403
https://forum.zkoss.org/question/9737/delay-tooltip-popup/