Scene View Locks Up In Place Mode (workaround) - Unity 6 (potentially 2022 and lower)

[SamNChiet]

Repro:

• Switch to the Rotation tool
• Select a non-brush transform with the Rotation tool active
• Switch to the Move tool

The scene view will block all interactions (besides dragging the gizmo of the active transform - though the gizmo also won't respond to hovering).

The issue is caused by boundsCenter turning into NaN.
I think the symptoms arise because the Handles calculations within the block I skip end up thinking the bounds are infinitely large - but skipping this chunk works just as well for now.
A true fix would be to prevent boundsCenter from becoming NaN in the first place, but that'll have to wait for another day.

Temporary workaround (adding a NaN check):

in EditMode.Place.cs at this line, replace:

    if (Tools.current == Tool.Move)
    {
        if (HaveSelection)
        {
            Vector3 newPosition = boundsCenter;
            // ...

with

if (Tools.current == Tool.Move)
{
    bool boundsCenterIsNaN = float.IsNaN(boundsCenter.x) || float.IsNaN(boundsCenter.y) || float.IsNaN(boundsCenter.z);   // TODO: investigate why this happens
    if (HaveSelection && !boundsCenterIsNaN)
    {
        Vector3 newPosition = boundsCenter;
        // the rest is the same