I was testing the different output options given at https://wiki.openstreetmap.org/wiki/Overpass_API/Overpass_QL#out and believe to have found a bug (on https://overpass-turbo.eu/ ) when using out meta noids;:

How to reproduce:

Use the following query:

nwr({{bbox}});
out meta noids;

The GUI will show:

processing query...
    -> parsing data
    ✓received about 10 kB of data
    ✓calling Overpass API interpreter
    ✓building query

and does not continue...