Feminism is like any social movement, it is a product of its time, and takes up some of the assumptions of the time it existed, which may or may not be good. And like any ideological position, it is sometimes more on the ball than others. And sometimes that includes the ideas that are most accepted into the general society and become almost normative.
The idea that there won't be wrong turns or bad ideas that have to be looked back on and modified or corrected is really naive, and even dangerous. We could identify a fair few, but I would say several are casing real issues now that need to be urgently considered:
There was a real "woman-power" push that has contributed to the lack of understanding of differences in male and female bodies. A lot of it revolved around women moving into very heave physical careers, like firefighting or the combat arms, and it's strongly impacted depictions of women in film and television. I think this could be tied to some extent as well to the tendency for women's studies departments and academic feminism to neglect really including biological science as part of it discipline, the main problem being that it has been a discipline dominated by ideology. Relatedly, feminism has struggled with motherhood.
The influence of 60's sex positivity and the sexual revolution has been a real mixed bag. This has been modified over the years but often in an ad hoc kind of way.
There is a real tension that continues to manifest problems between the idea of feminism as a ideology of the left, or a project by women, for women. It tends to present itself as the latter but act as the former, and in doing so has alienated many women and lost out on certain kinds of female experiences.
But the most urgent issue now, IMO, is that it has been deeply influenced by Critical Theory and identity politics, and those are as toxic in feminism as they are anywhere else. And it's deeply enough ensconced that a lot of ideas that are considered baseline assumption necessary to feminism are manifestations of CT thinking.