I'm afraid I don't have a straight forward answer to your question. When I ran into this React error it usually meant I forgot something in my markup that the browser thought it should fix- the browser changed the DOM and React didn't know about.
Try looking at the rendered dom in the browser and see if it is different from what you specified in the component. Something like a wrong nesting of elements or some element the browser added by itself, etc. I did a few Material-UI experiements (https://github.com/tuhlmann/reagent-material) a while ago, maybe something int the repo can help. In the end I decided to go with Bootstrap 4... Hope that helps, Torsten. -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups "ClojureScript" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojurescript+unsubscr...@googlegroups.com. To post to this group, send email to clojurescript@googlegroups.com. Visit this group at https://groups.google.com/group/clojurescript.