SkyCrane has no TWR, thrust or ∆v during flight and on VAB

[metalbass]

Depending on the build order while using the Skycrane, a lot of information can be missing on the ∆v tools, from stock KSP.
I think the Skycrane only checks for fuel below it, but there are still cases that I don't understand.

These are the test cases I've been looking at:

Test case 1:

Using the SkyCrane as a regular engine. The root is a capsule and construction is top-to-bottom.

1- Mk1 Command Pod
2- FL-T100 Fuel Tank
3- SkyCrane

Issues on the stage information, from ∆v tools:

• Missing ∆v
• Missing ISP
• Missing thrust
• No mass reduction accounted for (start mass = end mass)
• Missing burn time

Test case 2:

Using the SkyCrane to pull up the ship. The root is a capsule; we add a fuel tank below and the skycrane on top of the capsule.

3- SkyCrane
1- Mk1 Command Pod
2- FL-T100 Fuel Tank

Everything looks correct on the stage information, from ∆v tools.

Test case 3:

Same as Test case 1, but with the SkyCrane in the middle. The root is a capsule and construction is top-to-bottom.

1- Mk1 Command Pod
2- SkyCrane
3- FL-T100 Fuel Tank

Same as Test Case 1, nothing on stage information, from ∆v tools:

• Missing ∆v
• Missing ISP
• Missing thrust
• No mass reduction accounted for (start mass = end mass)
• Missing burn time

Test case 4:

Same as Test case 3, with the SkyCrane in the middle, but it's now the root piece.

3- Mk1 Command Pod
1- SkyCrane
2- FL-T100 Fuel Tank

Everything looks correct on the stage information, from ∆v tools.