Am I missing something here? bootstrap.min.css does not include certain essentials that you add via "../_assets/css/custom.min.css"

[WebDragon]

If you JUST use the v5 theme's bootstrap.min.css as specified in the dropdown as I am used to doing with previous releases of bootswatch 4 and earlier, the resulting page does not look right, buttons all crammed together, incorrect spacing, weirdness everywhere.

https://jsfiddle.net/foc8pvk3/

but if you include that extraneous css include, everything looks fine. So why is this not part of the theme file ?

https://jsfiddle.net/foc8pvk3/1/

this seems to be true for all of the themes, so I am very curious as to the omission of these additional css rules in the actual theme's bootstrap.min.css file