[fix] show invalid feedback #766
                
     Closed
            
            
          
  Add this suggestion to a batch that can be applied as a single commit.
  This suggestion is invalid because no changes were made to the code.
  Suggestions cannot be applied while the pull request is closed.
  Suggestions cannot be applied while viewing a subset of changes.
  Only one suggestion per line can be applied in a batch.
  Add this suggestion to a batch that can be applied as a single commit.
  Applying suggestions on deleted lines is not supported.
  You must change the existing code in this line in order to create a valid suggestion.
  Outdated suggestions cannot be applied.
  This suggestion has been applied or marked resolved.
  Suggestions cannot be applied from pending reviews.
  Suggestions cannot be applied on multi-line comments.
  Suggestions cannot be applied while the pull request is queued to merge.
  Suggestion cannot be applied right now. Please check back later.
  
    
  
    
resolves #763
by adding a dummy div that triggers one of the rules in https://github.com/twbs/bootstrap/blob/main/scss/forms/_validation.scss
as there are no e2e browser tests I tested the visibility in a local project #trustmebro
in the process I had to set up a shell.nix. If there is interest in adding this to the repo, I'm happy to create another PR for this.