I also Face this issue....

Really appreciate any help

In normal case, we are using the following code to load the js and css.

<template id="assets_backend_dashboard" name="Hr Dashboard assets inherit" inherit_id="web.assets_backend">

<xpath =".">

<link rel="stylesheet" href="/hrms_dashboard/static/src/css/hrms_dashboard.css"/>

</xpath>

</template>

Now remove this line

<link rel="stylesheet" href="/hrms_dashboard/static/src/css/hrms_dashboard.css"/>

 and paste it in the template in which your are using.

 By doing this i got my css loaded even in the normal mode. Not in debugging mode with Assets.