React - Suspense not fully loaded scss

I did the following implementation:

import {lazy, Suspense} from 'react'

1. Load (lazy) my component:

   const Component = lazy(() => import('./componentPath'))

2. Wrap the Switch in Suspense:

   <Suspense fallback={<span>Loading...</span>}>
       <Switch>
           <Route exact path='/path' component={Component} //>
       </Switch>
   </Suspense>
   

and I hit the following issue:

On many places css is with bad margins, padding even there are some styles which are missing.

My goal is to lazy load components on Route level.

Any ideas how I can fix this? Thank you in advance