Synchronize node parameter updates on hitting return key

Some nodes wait for the user to hit return/enter before processing a change to a parameter in the node menu (the "shapes" node, for example).

However, only the specific parameter in which the user hits return/enter is updated. This leads to somewhat frustrating behavior where, for example, a node network will fail to run successfully due to a dimension mismatch — even though the Shapes node shows the correct dimensions — until the user returns to _all_ updated boxes and hits return.

It would seem smoother to synchronize this so that any time the user hits return, all updated values in the node menu are recognized.

I'm marking this as a question as well in case this is already possible in the current framework — in that case this is a discussion for the node development issues board.