The tide icons are showing the level for the current time fine, but if we select a date in the future, even just 3-6 hours, they default to the "boat" one, so we can't see the predicted level at a glance.
However, when hovering over the icons we can see that there's data for the following few days, so we would expect the icons to update at least until then.

Current time, ok:

Just a few hours later, not ok:

Data is present but not reflected in the icon:

As a side note, it would be quite helpful if beside the day of the month (e.g. 29.9 at 1:43 PM) there's also the day of week, something like Thursday 29.9 at 1:43 PM

With the tide forecast layer enabled, if you select a date in the past and then you zoom in/out, most (but not all) of the tide station icons disappear. It seems like the only way to make them reappear is by reloading the page/app.
This problem is at least in Chrome, Firefox and Android.

Before:

After: