In order to make your issue reports as actionable as possible, please provide the following information, depending on the issue type.
When inserting a a record into a table with a TIMESTAMP WITH TIME ZONE column, the format of the timestamp is different between the snapshot and streaming records. These values should be identical if the inserted values are identical.
With the insert value 2010-12-01 23:12:56.788 -12:44, the snapshot emits a value of 2010-12-02T11:56:56.788000Z while the streaming phase emits a value of 2010-12-01T23:12:56.788-12:44.
Per the documentation, a TIMESTAMP WITH TIME ZONE field should be emitted as:
A string representation of a timestamp with timezone information.
While neither value in either phase is incorrect for the timepoint, there is no reason that these should be formatted differently for the same value