Maximum Call stack exceeded in decryption algorithm.
Edge got to between 600kb and 800kb
Chrome failed at 200kb.
Decryption failed due to: RangeError: Maximum call stack size exceeded.
We should either limit the number of characters in the note to something reasonable ( 50,000 ) or address the recursion in the algorithm.
In the case of a limit, the instruction help text should be updated to reflect this.