Hi! Thanks for a nice job! I'm struggling with one issue. My app is on new

Hi! Thanks for a nice job!
I’m struggling with one issue.
My app is on new Vaadin 19.0.0.beta4.
When I stop tomcat there’s warning about TooltipsCleaner thread:

WARNING: The web application [web]
appears to have started a thread named [dev.mett.vaadin.tooltip.TooltipsCleaner]
but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Thread.sleep(Native Method)
dev.mett.vaadin.tooltip.TooltipsCleaner.lambda$new$0(TooltipsCleaner.java:30)
dev.mett.vaadin.tooltip.TooltipsCleaner$$Lambda$957/809083087.run(Unknown Source)
java.lang.Thread.run(Thread.java:748)

I opened an issue to look into it:
https://gitlab.com/gsedlacz/tooltips4vaadin/-/issues/31

It appears to be a [non issue]
(https://stackoverflow.com/a/28106807/7625131) as the thread in question is a daemon thread.

Nevertheless I replaced the Thread implementation one based on a ScheduledThreadPoolExecutor which will be part of an upcoming update.