Unable to play with Opera on Linux

[mikerobinson]

Works fine with Chrome and Chromium, but not with Opera. In Opera I get 404 errors in my console to URLs like this every time I click on the play button:

https://guc-spclient.spotify.com/connect-api/v2/from/1af6fc1c980cc1599d7276c46ddc6a4e131cb559/device...

Here is an example request copied from the console:

1. Request URL:
   https://guc-spclient.spotify.com/connect-api/v2/from/1af6fc1c980cc1599d7276c46ddc6a4e131cb559/device...
2. Request Method:
   POST
3. Status Code:
   404
4. Remote Address:
   35.186.224.62:443
5. Referrer Policy:
   no-referrer-when-downgrade
1. Response Headers
1. access-control-allow-credentials:
   true
2. access-control-allow-headers:
   Accept, Authorization, Origin, Content-Type, Spotify-App-Version, App-Platform
3. access-control-allow-methods:
   GET, POST, OPTIONS, PUT, DELETE, PATCH
4. access-control-allow-origin:
   *
5. access-control-max-age:
   604800
6. alt-svc:
   clear
7. cache-control:
   private, max-age=0
8. content-length:
   0
9. date:
   Fri, 23 Feb 2018 08:26:26 GMT
10. status:
    404
11. strict-transport-security:
    max-age=31536000
12. via:
    1.1 google
13. x-content-type-options:
    nosniff
2. Request Headers
1. :authority:
   guc-spclient.spotify.com
2. :method:
   POST
3. :path:
   /connect-api/v2/from/1af6fc1c980cc1599d7276c46ddc6a4e131cb559/device/1af6fc1c980cc1599d7276c46ddc6a4e131cb559/play?compatibility=false
4. :scheme:
   https
5. accept:
   */*
6. accept-encoding:
   gzip, deflate, br
7. accept-language:
   en-US,en;q=0.9
8. authorization:
   (removed to not reveal sensitive information)
9. content-length:
   349
10. content-type:
    text/plain;charset=UTF-8
11. origin:
    https://open.spotify.com
12. referer:
    https://open.spotify.com/user/12133907223/playlist/2c669IJsDSuYNcrec46qoT
13. user-agent:
    Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 OPR/51.0.2830.34
3. Query String Parametersview sourceview URL encoded
1. compatibility:
   false
4. Request Payloadview source
1. 1. {context: {uri: "spotify:user:12133907223:playlist:2c669IJsDSuYNcrec46qoT",…},…}
   1. context:{uri: "spotify:user:12133907223:playlist:2c669IJsDSuYNcrec46qoT",…}
   2. options:{skip_to: {track_index: 6}, license: "on-demand", player_options_override: {shuffling_context: null}}
   3. play_origin:{feature_identifier: "harmony", feature_version: "3.5.0-1fb51bc"}

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