What I get to an "empty" image, I see this in the console: ``` TypeError: googletag.destroySlots is not a function adb.2283410.min.js:2:113925 ``` Sure enough, `https://www.googletagservices.com/tag/js/gpt.js` is blocked. If I minimally shim that script that so that `googletag.destroySlots()` exists, then the arrows work, though there are still "empty" images in the gallery. If we'd like to try to have some sort of "placeholder" image in place of ads, so users see a "Firefor has blocked a tracker here", we can investigate further.
Bug 1504155 Comment 3 Edit History
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What I get to an "empty" image, I see this in the console: ``` TypeError: googletag.destroySlots is not a function adb.2283410.min.js:2:113925 ``` Sure enough, `https://www.googletagservices.com/tag/js/gpt.js` is blocked. If I minimally shim that script that so that `googletag.destroySlots()` exists, then the arrows work, though there are still "empty" images in the gallery. If we'd like to try to have some sort of "placeholder" image in place of ads, so users see a "Firefox has blocked a tracker here", we can investigate further.