Get streams repeatedly returning cursor "IA"

I just tested it and the API does respect first. As a test I specified three user_ids and it paginated successfully. However, it took many attempts as sometimes it returned the bad cursor “IA”:

   % curl -H "Authorization: Bearer $TWITCH_TOKEN" \
-X GET 'https://api.twitch.tv/helix/streams?first=1&user_id=30661033&user_id=24124090&user_id=28640725'
{"data":[{"id":"36361123280","user_id":"30661033","user_name":"saintvicious","game_id":"513143","type":"live","title":"Me Zed !comps","viewer_count":2128,"started_at":"2019-12-06T10:40:08Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_saintvicious-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039"]},{"id":"36362407344","user_id":"24124090","user_name":"DatModz","game_id":"512929","type":"live","title":"Finishing Darksiders Genesis - Unbiased Review | Light ARPG","viewer_count":1110,"started_at":"2019-12-06T18:00:26Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_datmodz-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039","67259b26-ff83-444e-9d3c-faab390df16f","d0976a7e-26a7-4a48-9225-c522808540f2"]},{"id":"36362159712","user_id":"28640725","user_name":"LobosJr","game_id":"24241","type":"live","title":"~Final Fantasy Friday!~ | FFXIV First Character Continues!","viewer_count":835,"started_at":"2019-12-06T16:48:23Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_lobosjr-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039"]}],"pagination":{"cursor":"IA"}}%                                                                                                                                                                                                                      

   % curl -H "Authorization: Bearer $TWITCH_TOKEN" \
-X GET 'https://api.twitch.tv/helix/streams?first=1&user_id=30661033&user_id=24124090&user_id=28640725'
{"data":[{"id":"36361123280","user_id":"30661033","user_name":"saintvicious","game_id":"513143","type":"live","title":"Me Zed !comps","viewer_count":2124,"started_at":"2019-12-06T10:40:08Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_saintvicious-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039"]}],"pagination":{"cursor":"eyJiIjpudWxsLCJhIjp7Ik9mZnNldCI6MX19"}}%                                                                                                                                                                                                                                                                                                               

   % curl -H "Authorization: Bearer $TWITCH_TOKEN" \
-X GET 'https://api.twitch.tv/helix/streams?first=1&user_id=30661033&user_id=24124090&user_id=28640725'
{"data":[{"id":"36361123280","user_id":"30661033","user_name":"saintvicious","game_id":"513143","type":"live","title":"Me Zed !comps","viewer_count":2128,"started_at":"2019-12-06T10:40:08Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_saintvicious-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039"]},{"id":"36362407344","user_id":"24124090","user_name":"DatModz","game_id":"512929","type":"live","title":"Finishing Darksiders Genesis - Unbiased Review | Light ARPG","viewer_count":1110,"started_at":"2019-12-06T18:00:26Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_datmodz-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039","67259b26-ff83-444e-9d3c-faab390df16f","d0976a7e-26a7-4a48-9225-c522808540f2"]},{"id":"36362159712","user_id":"28640725","user_name":"LobosJr","game_id":"24241","type":"live","title":"~Final Fantasy Friday!~ | FFXIV First Character Continues!","viewer_count":835,"started_at":"2019-12-06T16:48:23Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_lobosjr-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039"]}],"pagination":{"cursor":"IA"}}%                                                                                                                                                                                                                      

[... a few more "IA"s ...]

   % curl -H "Authorization: Bearer $TWITCH_TOKEN" \
-X GET 'https://api.twitch.tv/helix/streams?first=1&user_id=30661033&user_id=24124090&user_id=28640725&after=eyJiIjpudWxsLCJhIjp7Ik9mZnNldCI6MX19'
{"data":[{"id":"36362407344","user_id":"24124090","user_name":"DatModz","game_id":"512929","type":"live","title":"Finishing Darksiders Genesis - Unbiased Review | Light ARPG","viewer_count":1117,"started_at":"2019-12-06T18:00:26Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_datmodz-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039","67259b26-ff83-444e-9d3c-faab390df16f","d0976a7e-26a7-4a48-9225-c522808540f2"]}],"pagination":{"cursor":"eyJiIjp7Ik9mZnNldCI6MH0sImEiOnsiT2Zmc2V0IjoyfX0"}}%                                                                                                                                                                                  

   % curl -H "Authorization: Bearer $TWITCH_TOKEN" \
-X GET 'https://api.twitch.tv/helix/streams?first=1&user_id=30661033&user_id=24124090&user_id=28640725&after=eyJiIjp7Ik9mZnNldCI6MH0sImEiOnsiT2Zmc2V0IjoyfX0'
{"data":[{"id":"36361123280","user_id":"30661033","user_name":"saintvicious","game_id":"513143","type":"live","title":"Me Zed !comps","viewer_count":2128,"started_at":"2019-12-06T10:40:08Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_saintvicious-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039"]},{"id":"36362407344","user_id":"24124090","user_name":"DatModz","game_id":"512929","type":"live","title":"Finishing Darksiders Genesis - Unbiased Review | Light ARPG","viewer_count":1110,"started_at":"2019-12-06T18:00:26Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_datmodz-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039","67259b26-ff83-444e-9d3c-faab390df16f","d0976a7e-26a7-4a48-9225-c522808540f2"]},{"id":"36362159712","user_id":"28640725","user_name":"LobosJr","game_id":"24241","type":"live","title":"~Final Fantasy Friday!~ | FFXIV First Character Continues!","viewer_count":835,"started_at":"2019-12-06T16:48:23Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_lobosjr-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039"]}],"pagination":{"cursor":"IA"}}%                                                                                                                                                                                                                      

[... a couple more "IA"s ...]

   % curl -H "Authorization: Bearer $TWITCH_TOKEN" \
-X GET 'https://api.twitch.tv/helix/streams?first=1&user_id=30661033&user_id=24124090&user_id=28640725&after=eyJiIjp7Ik9mZnNldCI6MH0sImEiOnsiT2Zmc2V0IjoyfX0'
{"data":[{"id":"36362159712","user_id":"28640725","user_name":"LobosJr","game_id":"24241","type":"live","title":"~Final Fantasy Friday!~ | FFXIV First Character Continues!","viewer_count":830,"started_at":"2019-12-06T16:48:23Z","language":"en","thumbnail_url":"https://static-cdn.jtvnw.net/previews-ttv/live_user_lobosjr-{width}x{height}.jpg","tag_ids":["6ea6bca4-4712-4ab9-a906-e3336a9d8039"]}],"pagination":{"cursor":"eyJiIjp7Ik9mZnNldCI6MX0sImEiOnsiT2Zmc2V0IjozfX0"}}%