This post is slightly off-topic for this blog but it can be classified as technical and also, I want to share this workaround with other users of the Blogger Android app. I managed to find it on the Google Product Forums but it's not an easy one to reach.
Sometimes, especially while traveling, you lose your net connection just before you hit "Publish" on a post. This causes the post to be forever stuck in "publishing" status. You aren't able to republish it even after your net connection gets restored, because the post is "greyed out" in the app.
In such cases, you can use the below workaround after your net connection is restored:
"User would need to use both thumbs as you are trying to force the system to do something with one while clicking on the affected post at the same time. User can hit any published/draft post with left thumb and follow it quickly with tapping on affected row with right thumb. It should happen quickly so that the published/draft post actually doesn't get the tap and rather the affected post row registers a tap event." Now edit the post just like any other draft and publish it.