Bug Product receipt JSON badly formatted [UnityIAP 4.4.1, 4.5.2 and 4.6.0]

We recently encountered an issue when parsing JSON data from UnityIAP. Specifically, we noticed that if a product description has new line characters at the end of it, our system crashes on parsing this kind of data.

For example, consider the following JSON snippet:

Code (JavaScript):

1. \\\"skuDetails\\\":
2. [\\\"
3. {
4. \\\\\\\"productId\\\\\\\":\\\\\\\"xxxxxxxxxxx\\\\\\\",
5. \\\\\\\"type\\\\\\\":\\\\\\\"inapp\\\\\\\",
6. \\\\\\\"title\\\\\\\":\\\\\\\"Golden Coins Pack (xxxxxxxxxxx)\\\\\\\",
7. \\\\\\\"name\\\\\\\":\\\\\\\"Golden Coins Pack\\\\\\\",
8. \\\\\\\"description\\\\\\\":\\\\\\\"Golden Coins Pack\\\\\\\\\\\\\\",
9. \\\\\\\"price\\\\\\\":\\\\\\\"RSD\\\\u00a0xxxxxxxxxxx\\\\\\\",
10. \\\\\\\"price_amount_micros\\\\\\\":xxxxxxxxxxx,
11. \\\\\\\"price_currency_code\\\\\\\":\\\\\\\"xxxxxxxxxxx\\\\\\\",
12. \\\\\\\"skuDetailsToken\\\\\\\":\\\\\\\"xxxxxxxxxxx\\\\\\\"
13. }\\\"
14. ]
15. }\",

and example of description for that case:

Code (CSharp):

1. Golden Coins Pack
2.  

In this case you can notice that there is an extra set of escape characters in the description which causes problems with parsing. Instead of

\\\\\\\

it has

\\\\\\\\\\\\\\

We had a problem that Singular crashes when parsing this kind of JSON, and it created a big problem in our UA campaigns as IAPs with new line character in description where not registered by Singular. We reproduced the problem in versions 4.4.1, 4.5.2 and 4.6.0.