Trouble telling whether a unit is valid or not

[assaultdoor]

Using MML 0.47.4 on OS X, I can't always tell from the title bar of the window whether a unit is valid or not. Valid units sometimes have "(Invalid)" after the unit's name, and invalid units sometimes don't have "(Invalid)".

Case 1: Invalid vehicle with out (Invalid) appearing.

I load a valid unit. In this example, and Ajax Assault Tank A.

Unit Validation > Validate Units says it is valid.

Now I add a PPC, putting it 7 tons overweight and leaving it with one item that hasn't been assigned a critical location. The title bar still just reads "Ajax Assault Tank A.blk".

Unit Validation > Validate Unit says it is overweight and has an unallocated PPC. The title bar still just reads "Ajax Assault Tank A.blk".

Pressing Cmd+S to save the unit does nothing. Pressing Cmd+Shift+S to save as gives me a warning about saving an invalid unit.

Case 2: Valid vehicle still has an (Invalid) in the title bar.

I create a new support vehicle. The title bar reads "New Support Tank.blk (Invalid)"

Unit Validation > Validate Unit correctly says that it is invalid because ICE engines must have fuel.

Give it 0.5 tons of fuel. "(Invalid)" remains in the title bar.

Unit Validation > Validate Unit correctly says that it is valid. "(Invalid)" remains in the title bar.

Cmd+S to save the unit brings up the standard save window with no warning about saving an invalid unit.