ID 426586 - Nodes downstream of a Group node do not update the Bake Point with changes

Problem summary
Having a Group node in a node stream will prevent all nodes, downstream of it, from updating the Bake Point with changes.

Customer reported version
Mari_4.6v2

Customer reported platform
Linux 

Steps to reproduce

1) Using the Example Project. In the Node Graph create an: empty Group node, a Merge node and a Bake Point node. An example of this setup is pictured below:

​

2) Bake the Bake point node in the Node Properties palette.

3) Adjust the Amount, for the Merge node, in the Node Properties palette.

Result: The Bake point does not update by turning red/dirty. 

Expected behaviour

The Bake Point node should turn red/dirty indicating the change upstream.

Actual behaviour
The Bake Point did not reflect a change upstream by turning red/dirty.

Workaround
Unknown. 

This bug has been reproduced in:

Mari 4.6v2 - Windows 10 - CentOS 7 -  MacOS 10.14.6
Mari 4.6v1 - Windows 10 -CentOS 7 - regression


Unable to reproduce bug in:

Mari 4.5v2 - Windows 10 - CentOS 7

Earliest version tested
Mari 4.5v2 - This issue doesn't appear in this version and has regressed