Saving style.css replicates selector and it's properties

Wappler General Bugs
1

Wappler Version : 6.8.0
Operating System : W11
Server Model: Nodejs
Database Type: Mariadb
Hosting Type: Caprover/DO

What do you think should happen?

on saving a style.css it should not replicate CSS code it has already replicated

What actually happens?

This code keeps replicating with every save.

#inp_openDate:not(:-moz-placeholder-shown) ~ label,
#file_upload:not(:-moz-placeholder-shown) ~ label {
  -webkit-transform: translateY(-1.5rem) scale(0.85);
  transform: translateY(-1.5rem) scale(0.85);
  right: 0.75rem;
  left: auto;
  opacity: 1;
}

#inp_openDate:not(:-ms-input-placeholder) ~ label,
#file_upload:not(:-ms-input-placeholder) ~ label {
  -webkit-transform: translateY(-1.5rem) scale(0.85);
  transform: translateY(-1.5rem) scale(0.85);
  right: 0.75rem;
  left: auto;
  opacity: 1;
}

How to reproduce

Place the above code in a style.css and save.