Bugzilla

Hi, I didn't managed to reproduce the issue on Firefox Release 68.9.0 (from playstore) with Sony Xperia Z5 (Android 7), Samsung Galaxy S9 (Android 8) nor with Google Pixel 3 XL (Android 9), I managed to trigger the download but the javascript error wasn't present, please check [video](https://drive.google.com/file/d/1yBTvDRILpjcMg4tXuCJwWtIY4_0qhAlX/view?usp=sharing)  and [settings](https://drive.google.com/file/d/1qDMK73uyeC5NYptUkVUAmwvSxrPdQzg1/view?usp=sharing).

Note:
On the try build i had the following outcome present after doing the steps from description [image of the saved file contents](https://drive.google.com/file/d/1Gfqlk-ppL-D1U7BaCrRHy-eSVxOhcQDT/view?usp=sharing).
After accessing a ngrok.io link the first outcome was that a download of the profiles.ini was triggered and afterwards a redirection to Play Store was present.
The iframe remains open in the browser, URL displays the ngrok.io link.

Hi, I didn't managed to reproduce the issue on Firefox Release 68.9.0 (from playstore) with Sony Xperia Z5 (Android 7), Samsung Galaxy S9 (Android 8) nor with Google Pixel 3 XL (Android 9), I managed to trigger the download but the javascript error wasn't present, please check [video](https://drive.google.com/file/d/1yBTvDRILpjcMg4tXuCJwWtIY4_0qhAlX/view?usp=sharing)  and [settings](https://drive.google.com/file/d/1qDMK73uyeC5NYptUkVUAmwvSxrPdQzg1/view?usp=sharing).

Note:
On the try build (more exactly the build from Android 4.0 API16+ Release opt )i had the following outcome present after doing the steps from description [image of the saved file contents](https://drive.google.com/file/d/1Gfqlk-ppL-D1U7BaCrRHy-eSVxOhcQDT/view?usp=sharing).
After accessing a ngrok.io link the first outcome was that a download of the profiles.ini was triggered and afterwards a redirection to Play Store was present.
The iframe remains open in the browser, URL displays the ngrok.io link.