Strider stacks not spawning correctly

Striders seem to be spawning incorrectly when in stacks of three.

Game output log for {{/data get }}with the bottom strider as the target:

[CHAT] Strider has the following entity data: {NoGravity: 1b, Brain: {memories: {, HurtByTimestamp: 0, Attributes: [{Base: 0.15000000596046448d, Name: "minecraft:generic.movement_speed"}, {Base: 16.0d, Modifiers: [{Amount: -0.004289155176515184d, Operation: 1, UUID: [I; -1189604260, -1680587497, -1600714442, 789150272], Name: "Random spawn bonus"}], Name: "minecraft:generic.follow_range"}], Invulnerable: 0b, FallFlying: 0b, ForcedAge: 0, PortalCooldown: 0, AbsorptionAmount: 0.0f, Saddle: 0b, FallDistance: 0.0057142857f, InLove: 0, DeathTime: 0s, HandDropChances: [0.085f, 0.085f], PersistenceRequired: 0b, UUID: [I; -452954157, -2106112635, -1594790474, 883168295], Age: 0, Motion: [0.0d, 0.01d, 0.0d], Health: 20.0f, LeftHanded: 1b, Air: 300s, OnGround: 0b, Dimension: -1, Rotation: [329.72662f, 0.0f], HandItems: [{}, {}], ArmorDropChances: [0.085f, 0.085f, 0.085f, 0.085f], Passengers: [{Brain: {memories: {}}, HurtByTimestamp: 0, Attributes: [{Base: 0.15000000596046448d, Name: "minecraft:generic.movement_speed"}, {Base: 16.0d, Modifiers: [{Amount: 0.008519211868876723d, Operation: 1, UUID: [I; -923526789, -834320927, -1526850177, 2011784407], Name: "Random spawn bonus"}], Name: "minecraft:generic.follow_range"}], Invulnerable: 0b, FallFlying: 0b, ForcedAge: 0, PortalCooldown: 0, AbsorptionAmount: 0.0f, Saddle: 0b, FallDistance: 0.0f, InLove: 0, DeathTime: 0s, HandDropChances: [0.085f, 0.085f], PersistenceRequired: 0b, id: "minecraft:strider", UUID: [I; -703091620, -978367705, -1978510891, -1261097894], Age: -21253, Motion: [0.0d, -0.0784000015258789d, 0.0d], Health: 20.0f, LeftHanded: 0b, Air: 300s, OnGround: 0b, Dimension: -1, Rotation: [128.55879f, 0.0f], HandItems: [{}, {}], ArmorDropChances: [0.085f, 0.085f, 0.085f, 0.085f], Passengers: [{Brain: {memories: {}}, HurtByTimestamp: 0, Attributes: [{Base: 0.15000000596046448d, Name: "minecraft:generic.movement_speed"}, {Base: 16.0d, Modifiers: [{Amount: 9.028763551896E-4d, Operation: 1, UUID: [I; -91084610, 740772913, -1583247886, 1500136289], Name: "Random spawn bonus"}], Name: "minecraft:generic.follow_range"}], Invulnerable: 0b, FallFlying: 0b, ForcedAge: 0, PortalCooldown: 0, AbsorptionAmount: 0.0f, Saddle: 0b, FallDistance: 0.0f, InLove: 0, DeathTime: 0s, HandDropChances: [0.085f, 0.085f], PersistenceRequired: 0b, id: "minecraft:strider", UUID: [I; 545882583, 163267991, -1079673257, -597612813], Age: -21253, Motion: [0.0d, -0.0784000015258789d, 0.0d], Health: 20.0f, LeftHanded: 0b, Air: 300s, OnGround: 0b, Dimension: -1, Rotation: [128.55879f, 40.0f], HandItems: [{}, {}], ArmorDropChances: [0.085f, 0.085f, 0.085f, 0.085f], Pos: [-878.8178368333506d, 34.57879611093803d, -5054.053838529586d], Fire: -1s, ArmorItems: [{}, {}, {}, {}], CanPickUpLoot: 0b, HurtTime: 0s}], Pos: [-878.8178368333506d, 33.03879611093803d, -5054.053838529586d], Fire: -1s, ArmorItems: [{}, {}, {}, {}], CanPickUpLoot: 0b, HurtTime: 0s}], Pos: [-878.8178368333506d, 31.498796110938027d, -5054.053838529586d], Fire: 0s, ArmorItems: [{}, {}, {}, {}], CanPickUpLoot: 0b, HurtTime: 0s}}}