Re-Signing on Firefox on Android fails

1. Add file to the queue
2. Start signing
3. Abort signing -> File is back in the queue
4. Start signing again or view the PDF

Expected:

• Signing and viewing works as the first time

Actual:

• Signing puts the document right into the error list
• Viewing never shows the document and spins forever

I've only seen this on Firefox (68) on Android.

Next steps:

• Does it work in Firefox Preview or Chrome?
• Can we setup a Android remote web debugger somehow?