\n\nThe issue is not happening when using @nuxt/ui v2 - I've narrowed it down to a v3 issue.\n\n### Additional context\n\n`nuxt.config.ts`:\n```js\nexport default defineNuxtConfig({\n app: {\n // rootTag: 'body',\n rootId: 'app',\n rootAttrs: {\n class: 'relative flex h-full'\n }\n }\n}\n```\n\n### Logs\n\n```shell-script\n\n```",[2080,2083,2084],{"name":2081,"color":2082},"bug","d73a4a",{"name":2003,"color":2004},{"name":2085,"color":2086},"upstream","78bddb",3487,"rootAttrs.class is rendering class names with spaces, e.g. \"i s o l a t e\"","2025-03-08T18:39:53Z","https://github.com/nuxt/ui/issues/3487",0.73877,{"description":2093,"labels":2094,"number":2097,"owner":1991,"repository":2098,"state":2007,"title":2099,"updated_at":2100,"url":2101,"score":2102},"https://content-v2.nuxtjs.org/guide/writing/mdc#props\n\n",[2095],{"name":2081,"color":2096},"ff281a",496,"nuxt.com","[Milkdown] On serialize, component props should keep their current format `inline` or `yaml`","2023-06-06T12:14:53Z","https://github.com/nuxt/nuxt.com/issues/496",0.74023783,["Reactive",2104],{},["Set"],["ShallowReactive",2107],{"TRc1wZytZ_XrK4EfJfei_Sz-An4H4Yy6syhVxH_PVJc":-1,"x06cFJnq5rpQwOGh-SZdLlAuNwSHl0qjomrrnPC4P8M":-1},"/nuxt/ui/2488"]