Bootstrap 5 - White background in dark mode, Why? @ Lyoneel.dev

Upgrading from boostrap v5.0.3alpha to v5.3.0 broke my background color

I was working on changes inside this site, I upgraded from bootstrap v5.0.3-alpha1 to v5.3.0. After the upgrade, the background becomes white, Why? IDK.

To allow easy upgrade between versions, I follow these rules:

I do not change anything from Bootstrap SASS source code.
Any customization ideally should be done via CSSVariables or overrides (CSS after bootstrap is loaded)

To give context, dark mode was implemented using:

<html data-bs-theme="dark">

Was working correctly before the update, I compared both versions; the difference I found in the HTML tag was:

“TBD”

If I uncheck color-scheme color went black as it was before, I didn’t find the way to manipulate that value. After many tries, I found a solution:

html {
    background: var(--bs-body-bg); 
}

I was very happy to make it work with CSS Variable, this will allow me to adapt quickly the colors if I set a different one later.

Thanks for reading!

Namaste.