SYSML2_ — View Node is not Specified as a 'subject-actors-stakeholders-node'

There is an inconsistency between Table 23. Views and Viewpoints - Representative Notation (specifically the 'Frame' element) and the Graphical BNF in section 8.2.3.20.
In the table, the 'frame' relationship connects a viewpoint to concern usages. However, the BNF specification for the 'frame' relationship does not include viewpoint usage as one of the possible relationship ends, as it has 'subject-actors-stakeholders-node' for one end and 'concern' for another.
The 'subject-actors-stakeholders-node' includes:

• requirements.
• analysis usage/def.
• verification usage/def.
• use case usage/def.