We report on the appearance of small isotropic droplets or bubbles, in free standing films of a non-chiral symmetric mixture of MHTAC, which exhibits a SmCA to isotropic phase transition. The isotropic droplets are initiated by applying a do electric field tangentially to the film plane. Then, when increasing temperature towards the isotropic phase transition, the droplets are observed to grow. They then organize to form chainlike and Y-shaped structures. The formation of these structures evidences the existence of anisotropic interactions of the dipolar type between the droplets, with a long range attraction and a short range repulsion. The short range repulsion is reduced when the droplets become large, so that they eventually collapse with one another before being swallowed by the meniscus. Hence, the appearance of such droplets may also be viewed as a precursor mark of a thinning process of the free standing film.