ADAU1701, setting the Serial port left-justified, the output data is rarely incorrect

Please let me ask you about ADAU1701.
If you know any solutions or information, would you please let me know ?

When setting the Serial data output left-justified,
there is a case that the only 1st bit of output data is not correct rarely.
Other bits are always correct.

When issuing RESET, writing application program and register by I2C
and checking the output wave form by multiple repetitions,
then the problem rarely occures, I found.

We had checked the data sheet, for example, followings aggain.
The system satisfies these specifications.

ADAU1701 data sheet (rev.B)
Page 8 DIGITAL TIMING SPECIFICATIONS
Page 10 INITIALIZATION

Audio Signal Processors

SigmaDSP Audio Processors

adau1701