Recall that a finite dimensional algebra $A$ over a field $K$is called a Frobenius algebra in case $A \cong D(A)$ as right modules, where $D(A) \cong Hom_K(A,K)$. In case $A \cong D(A)$ as bimodules, then $A$ is called a symmetric algebra. It is well known that a finite dimensional Hopf algebra is a Frobenius algebra.
Question: Is a finite dimensional local Hopf algebra a symmetric algebra?
Examples of local finite dimensional Hopf algebras are group algebras of $p$-groups and it was shown in When is the exterior algebra a Hopf algebra? that for the exterior algebra, it is indeed true that being a Hopf algebra implies that it is symmetric.