Round trip plutus datum serialization/deserialization error

[theeldermillenial]

Describe the bug When adding a script input to a transaction in the transaction builder, the datum is improperly serialized.

To Reproduce I will create a small working example later today, but the basic steps are:

1. Create a custom plutus data class
2. Create a datum, print the datum hash
3. Create a transaction with the transaction builder, add a script input
4. Build the transaction and serialize to cbor
5. Deserialize the transaction, generate the hash of the datum in the witness set

Additional context: Generating the hash of the datum before serialization is correct.

Expected behavior Roundtrip serializing and deserializing of a transaction without mutations in the data.

Environment and software version (please complete the following information):

• OS: Ubuntu
• PyCardano Version 0.10.0 (also tried with latest on Github)