ID 162897 - PostageStamp node breaks concatenation

Problem summary
PostageStamp node breaks concatenation.

Customer reported version
Nuke 13.2v5

Customer reported platform

Multiple

Steps to reproduce

1) Open Nuke.

2) Create a CheckerBoard node.

3) Create a Transform node downstream of the CheckerBoard.

4) Modify some values in the Transform node's Properties. For example, set rotate to -20 and scale to 0.5.

5) Copy and paste this Transform node and connect ot downstream.

6) On the second Transform node, enable invert. The Transform nodes should be concatenating as expected. 

7) Add a PostageStamp node between the two Transform nodes. Notice that the filtering appears to be applied twice (you may need to zoom in on the Viewer to see this).

Expected behaviour
PostageStamp nodes should not break concatenation.

Actual behaviour
The PostageStamp node breaks concatenation and the filtering is applied twice.

Workaround
Unknown.

Reproduced by support
This bug has been reproduced in:
Nuke 13.2v5 - Windows 10 - Linux CentOS 7

Nuke 12.0v1 - Windows 10 - Linux CentOS 7  

Nuke 9.0v1 - Windows 10

Earliest version tested
Nuke 9.0v1
- This issue appears to be in all tested versions of the product