It may be a browser update issue,Paul. A while ago when my old Mac was still running Yosemite,because it was too old to be supported,I had all kinds of strange difficulties. Soundcloud is riddled with glitches at times too.
Using Opera if I change the title of a track on Soundcloud,it looks as if it has updated fine,then when I refresh the page,the old title is still there. I have to go to Chrome and do it from there,then everything works ok.