This is already reported here https://github.com/NodeBB/NodeBB/issues/5208
When replying to a topic the composer does not automatically fill the title input field which creates an error when using lavender theme:
when i click on reply i get this composer. "Entrer le titre du sujet ici" is the placholder text that is not disabled and on the bottom right "Nouveau Sujet"means new subject but i clicked on reply ...
Thanks for the help