Zooming in with the mouse often doesn't load the vector layer

[lonvia]

When I zoom into the map by pressing the Shift key and drawing a rectangle on the map with a mouse, the vector layers often don't get loaded correctly. Tore produce

• Start for example with this view: https://nominatim.org/qa/#map=8.71/49.74/15.04&layer=addr_place_and_street
• Press shift and draw a tiny rectangle around the "P" of Praha. The map will zoom in but there are no items displayed.
• Go back to the original page and zoom in by repeatedly clicking at clusters. You will see that there should indeed be items.

I suspect that it happens when I hit a zoom level for which there are no vector tiles defined. Instead of loading the ones for the next lower level, it simply does nothing.

[AntoJvlt]

The example you gave with Praha works very well for me, do you still have the issue? Maybe this should be also tried with the new Svelte version

[lonvia]

I still see it with the svelte version. Does this link work for you in your local test development: http://localhost:5000/#map=18.22/50.09/14.42&layer=addr_street_wrong_name

[AntoJvlt]

Indeed this link doesn't work but the problem is not the same as the one you mentioned initially (I think). Here the problem is that the zoom level is way too big and we don't have vector tiles for them, we stop generating vector tiles before when we reach a zoom level where we display all the features anyways (no clusters). This means that the data get displayed if you zoom from top to bottom and not if you arrive on the page directly to a very big zoom level.

This is a bit tricky to fix, because depending on the global features repartition we don't know to which zoom level the last vector tile is generated for this feature.