ID 459541 - Splitting a pane that is maximised does not place the panes correctly

Problem summary
Splitting a pane that is maximised does not place the panes correctly.

Customer reported version
Nuke 12.2v3

Customer reported platform
CentOS 7

Steps to reproduce

1) Open Nuke.

2) Click on the content menu button

in the top left corner of the Viewer pane and select Split Horizontal.
This will create a 2nd pane.

3) Create a second Viewer, then drag & drop it into the newly created pane.

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4) Maximise the pane on the left (press the Space bar while mousing over the pane).
5) Click on the content menu button

in the top left corner of the pane and select Split Horizontal again.
This will create a 3rd panel.

6) Press the space bar again to restore the size of the panes. Notice that the pane containing Viewer 2 has disappeared.
However, you can find it again on the right side of the 3rd pane, by dragging the divider line between the two panes: 

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Expected behaviour
Splitting an expanded pane shouldn't resize any other panes. 
The panes should be placed in the same way as splitting them without expanding. For example:

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Actual behaviour
Splitting a pan, that is maximised does not place the panes correctly.
In this case, the 2nd pane is resized and is no longer visible, until it is resized.

Workaround
You can find the missing pane by resizing it, by dragging the divider line between the two panes.

Reproduced by support
This bug has been reproduced in:
Nuke 12.2v3 - Windows 10 - macOS 10.13 (High Sierra) - Linux CentOS 7
Nuke 12.0v1 - Windows 10
Nuke 11.0v1 - Windows 10
Nuke 10.0v1 - Windows 10
Nuke 9.0v1 - Windows 10
Nuke 8.0v1 - Windows 10 - macOS 10.13 (High Sierra)

Earliest version tested
Nuke 8.0v1
- This issue appears to be in all versions of the product