Issue in context derivation for chroma residual coding when transform_skip_flag = 1

[forayr]

In 9.3.3.2, 9.3.4.2.6, 9.3.4.2.7, 9.3.4.2.8, 3.3.4.2.9, the conditions on transform_skip_flag should also check if this is a luma TU, as the process residual_ts_coding is called only on luma.
For the chroma component, the process residual_coding is used, and the context derivation should not be the one used when transform_skip_flag = 1.

[bbross]

Good catch! Thanks!

Fixed it by adding "and cIdx is equal to 0" and "or cIdx is greater than 0" in a document we are preparing to be submitted as an editorial input
to the 16th JVET meeting.