Today I had an interesting situation when trying to create a topic here on meta, which I was able to reproduce as follows:
- create new topic
- upload a file
- before upload finishes, select CREATE TOPIC button (I know, I know, that was a mistake)
- realize mistake, go back and edit topic again.
At this point you get a message indicating progress of your earlier attempt to upload but stuck at the moment when you hit create topic and stopped the upload. It just sits there and nothing happens, and trying to cancel has no effect either. I restarted my phone and returned to the post and I was able to edit the post again with a new upload.