Allowed file extensions not working on mobile

Hi, my form works great on every device when there are no allowed file extensions on my multi-upload field, but as soon as I add an allowed file extension the upload button will do nothing on mobile?

Does anyone know any reasons this maybe happening?

Testing on the newest version of Firefox Mobile on Android 8.1.0.

Hello Soor. I recommend opening a support ticket for this issue:

I will leave this open in case anyone in the community has already resolved a similar issue.

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