Teleporting glitch with enemy groups

I have a top-down game.. I want enemies to group like in starcraft, not overlapping each other.

To achieve that, I make the enemies solid and make them use 8-directions movement to have them be effected by solid.

I move enemies forward using "Move forward" action.

It works super well, except when it get's crowded.. then the squeezed enemies "teleport" to the edges of the group.

Anyone have experience with overcoming the teleporting glitch in this kind of setup?

Any tips or ideas are welcome

You can use custom movement and then: push out solid.

There is also a behavior from Rex with push out solid.