The intent filter on ThreadsListActivity was missing the default category. Oddly, the intent filter on CommentsListActivity was picking up subreddit URLs instead. For the last tag, the host was being ignored and treated as reddit.com. Splitting the filter out fixed the issue.
Thank you. I'm merging this into master, but the next version of the app I plan to release will no longer be based on this repo. I've also rewritten intent filters.
The intent filter on ThreadsListActivity was missing the default category. Oddly, the intent filter on CommentsListActivity was picking up subreddit URLs instead. For the last tag, the host was being ignored and treated as reddit.com. Splitting the filter out fixed the issue.