ELK layout quite messy inside a container.

[andergnet]

I defining a diagram and I wanted to but it inside a container with the idea to generate a diagram with two different subdiagrams.
I noticed that using the ELK layout the same diagram inside and outside a container looks totally different being the one inside the container quite a mess.

d2 versions: v0.6.5 & v0.6.8

This is an example of such behavior:

AA -> AV
AB -> A4
AB -> AH
AC -> AO
AD -> AL
AE -> AN
AF -> AO
AG -> A5
AG -> A6
AH -> AG
AI -> AG
AJ -> AO
AK -> AB
AL -> AH
AM -> AL
AN -> A4
AN -> AH
AO -> A7
AO -> AH
AP -> AB
AQ -> AV
AR -> AL
AS -> AO
AT -> AF
AU -> AV
AV -> AI
AW -> AV
AX -> AL
AY -> AN
AZ -> A3
A0 -> AO
A1 -> AO
A2 -> A3
A3 -> AB

box {
   BA -> BV
   BB -> B4
   BB -> BH
   BC -> BO
   BD -> BL
   BE -> BN
   BF -> BO
   BG -> B5
   BG -> B6
   BH -> BG
   BI -> BG
   BJ -> BO
   BK -> BB
   BL -> BH
   BM -> BL
   BN -> B4
   BN -> BH
   BO -> B7
   BO -> BH
   BP -> BB
   BQ -> BV
   BR -> BL
   BS -> BO
   BT -> BF
   BU -> BV
   BV -> BI
   BW -> BV
   BX -> BL
   BY -> BN
   BZ -> B3
   B0 -> BO
   B1 -> BO
   B2 -> B3
   B3 -> BB
}

The result is the following after running: d2 --layout elk test.d2

There is a big difference int the layout between the two subdiagrams that should look the same.