In my organization we pair program remotely using C9, and keeping track of your partner’s cursor is obviously really important. We noticed in the last month or two a bug seems to have cropped up where if you do “Open Active File” on your partner’s icon the file opens but it doesn’t show their cursor in it. Instead, text they enter will sporadically appear. If you close the file and re-open it from the file tree, their cursor re-appears. Obviously that’s pretty inconvenient, though.
Thanks for reporting this will be fixed with the next release.