「スラッグ生成方法」設定に応じて、カテゴリのスラッグにアクセント文字を許可するかどうか

[tshenry (Taylor)]

Have you tried setting the slug generation method site setting to “encoded” by chance?

There was a similar bug reported here: Newly added non-ASCII category page does not load. If it seems like something has regressed, let us know!