Привязать контейнер внутри
<div [fxLayout]="fields.layoutConfig.fxLayout + ' wrap'" fxLayout.xs="column"
[fxLayoutGap]="fields.layoutConfig.fxLayoutGap"
[fxLayoutAlign]="fields.layoutConfig.fxLayoutAlignHorizontal + ' ' + fields.layoutConfig.fxLayoutAlignVertical">
<div [fxFlex]="fields.layoutConfig.fxFlex" *ngFor="let field of fields.componentConfig;">
<ng-container reactiveField [field]="field" [group]="form"></ng-container>
</div>
</div>