definitely the same issue. the tooltips appear except it’s cut off by the green header at the top of the page.
try https://guylwalker.com/?cat=7.
i tried the workaround you suggested (change the z-order of the template object that hides the tooltip). i had to set mine to 6000, though, for it to work. but there should be a way to force the tooltip to the top of the z-order by allowing us to set it in the settings.