Search Endpoint returning the same result for the majority of calls when using ISRC

[samfenwick1]

Plan

Premium

Country

GB

Device

Macbook Pro M1

My Question or Issue

Calling the search endpoint with a valid isrc search value appears to be returning the same false song in the majority of cases. This is functionality that was working until today.

e.g.
Searching for Curtis Mayfield - Superfly
https://api.spotify.com/v1/search?q=isrc:USRH10284929&type=track&limit=1

returns:

"external_ids" : {
"isrc" : "NLC8M2000219"
},
"name" : "Clean Baby Sleep White Noise (Loopable)"

This is the same song returned in the majority of cases. If the limit search term is changed (e.g. limit=50), the same set of songs are returned.

Note: all returned songs seem to have a popularity greater than 83 with many above 90.

A song which is currently working:
James Brown - The Boss
https://api.spotify.com/v1/search?q=isrc:USPR37380050&type=track&limit=1

[fjp666]

using "isrc:USRH10284929" instead of isrc:USRH10284929 as q, try adding double quotes to your q