ID 475517 - Autoplace in Vertical NodeGraph mode aligns nodes horizontally

Problem summary
Autoplace in Vertical NodeGraph mode aligns nodes horizontally

Customer reported version
Mari 4.7v1

Customer reported platform
CentOS 7

Steps to reproduce

1) Open the Preferences (Edit > Preferences)

2) In the 'Node Graph' tab, change the 'Default Port Display' to 'No Ports List (Vertical)'

3) Open any project

4) Create some nodes and position them so they are misaligned

5) Select the nodes and Autoplace them by pressing [L] or right-clicking and selecting 'Autoplace'

Expected behaviour
The nodes should be aligned vertically

Actual behaviour
The nodes become aligned horizontally 

Workaround
Unknown.

Reproduced by support

This bug has been reproduced in:
Mari 4.7v2 - Windows 10 - CentOS 7.7

Mari 4.7v1 - Windows 10

Mari 4.6v1 - Windows 10 - CentOS 7.7

Unable to reproduce bug in:
Mari 4.5v2 - Windows 10 - CentOS 7.7

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