Interpolation in multiple class tags only works after hotreload

[oletf]

Problem

Multiple class tag concatenation doesn't seem to work at load, if one of the class tags contains an interpolated variable.

Steps To Reproduce

The following works as expected

#[component]
fn Thing(more_class: &'static str) -> Element {
   rsx! {
        div { class: "flex {more_class}",
              "text"
        }
    }
}

The following has generated class empty on load after full rebuild or just launching the executable

#[component]
fn Thing(more_class: &'static str) -> Element {
   rsx! {
        div { class: "flex",   // a lot of other classes on the same line
              class: "{more_class}", // hence the multiple class tags which usually get concatenated 
              "text"
         }
    }
}

generates : <div class> until next hotreload, where it properly gets all the concatenated+interpolated class list

Environment:

• Dioxus version: dioxus 0.6.3
• Rust version: 1.86.0
• OS info: Windows10 22H2
• App platform: desktop

Thanks forward

[miguelpduarte]

Also facing this problem on the web platform.

Environment details:

• dioxus 0.6.3 (fc1f1c2)
• rustc 1.86.0 (05f9846f8 2025-03-31)
• OS info: macOS Sonoma 14.5
• App platform: web