The Ohr Hachayim. In, in Rishon Letziyon to that passage in Megillah, also disagrees with the Maharshal, and sides with the Tur. He writes:
See also Rabbi Yerocham Fischel Perlow (commentary to Rav Saadya Gaon's Sefer HaMitzvos (Assei: 9-10) to whowho writes that at least some kibbud av v'em supersedes Torah study:
The Terumas Hadeshen (40) re fencesreferences the Gemara in Megillah for in a halachic context, which is in accordance of the minority view of the Maharshal, and apparently against the Rambam, Tur, Bach, Perisha, and Taz's reading of the Gemara in Megillah.
Interestingly, a careful reading of RashiRashi's commentary (Genesis 28:9), (at least according to one text) Rashi suggests that Jacob shouldn’t have studied but rather served his parents. Nevertheless, the great merit of the Torah protected him from punishment for this misdeed.