Adyoulike adapter user sync pixel causes popup message in Safari

[mkarlov]

When prebid server loads usersync URL https://acdn.adnxs.com/prebid/universal-creative/load-cookie.html?max_sync_count=30
and if it loads usersync pixels from bidder adapter Adyoulike https:/prebid/prebid-server/blob/master/static/bidder-info/adyoulike.yaml the url prompts popup message in Safari browser.

Example:
{
"bidder": "adyoulike",
"no_cookie": true,
"usersync": {
"url": "https://visitor.omnitagjs.com/visitor/isync?uid=19340f4f097d16f41f34fc0274981ca4&name=PrebidServer&gdpr=&gdpr_consent=&us_privacy=&url=https%3A%2F%2Fib.adnxs.com%2Fprebid%2Fsetuid%3Fbidder%3Dadyoulike%26gdpr%3D%26gdpr_consent%3D%26gpp%3D%26gpp_sid%3D%26f%3Db%26uid%3D%5BBUYER_USERID%5D",
"type": "iframe"
}
},

To reproduce, paste the url in Safari. This causes bad user experience and complaints from website visitors.

[bretg]

@mkarlov - I'm not getting an error in safari for this URL. Please paste the error or a screenshot.

Heads up @SimonThevenot and @chrisg93 - may be something AdYouLike should look at.

[mkarlov]

Hi @bretg

Attaching screenshots from my test and client live site.

[bretg]

Thanks. @SimonThevenot and @chrisg93 - I suspect this might have to do with your isync script not having a content-type tag on the response. (?)

[SimonThevenot]

Hello @bretg @mkarlov. Thanks for raising this issue. Yep it seems we are missing a header, we'll take care of it as soon as possible, I'll keep you in touch

[SimonThevenot]

Hello @bretg @mkarlov
This has been fixed, could you confirm that the behavior is now OK ? Thanks

[bretg]

@mkarlov - the isync script now returns a content-type. Am going to close this as resolved. Please re-open if needed.

[mkarlov]

Sorry for the late response, I was away for the last couple of weeks. The issue appears to be fixed now, thank you!