Selection Cube in Gridmap not selecting correctly in some workflows

[Nodragem]

Tested versions

4.3dev7

System information

Windows 11 Godot 4.4dev7

Issue description

When working with modular assets (e.g. floors, walls, corners), and hence having cells half the size of the asset size, with centerX=centerY=CenterZ=false for correct alignment, we get the following issue where the wall aren't selected:

bug1-gridmap-selection.mp4

Steps to reproduce

Above.

Minimal reproduction project (MRP)

I will provide one later, as I start working on it.