It is a normal effect observed in the language of beginner and intermediate language-learners, whether native-speaker children or foreign-speaker adults.
Because most natural languages have some irregular forms, moving beyond overregularization is a part of mastering them.
Usually, learners' brains move beyond overregularization naturally, as a consequence of being immersed in the language.
Perhaps the brain needs practice in sidestepping the rule entirely as the needed objects [e.g., phonetic strings or past-tense inflected verb forms] are called directly instead of being derived on-the-fly via the rule.)
Native-speaker children do not make phonetic overcompensation errors in the same manner or degree that foreign-speaker adults do, because they do not carry the baggage of an earlier language's differences.