I recently identified a major methodological issue in a co-author's draft paper. I then worked for 30+ hours including on several weekends to develop, implement, debug, and document a solution due to the urgency to submit and my expertise in the area - this atop my feedback on earlier methods/results and comments on the draft.
Now, I was initially listed in the latter half of 10+ authors (but not a "senior" position), and in the updated draft my position hasn't changed. Several co-authors listed before me led data collection for one dataset we used (but the dataset has been used in numerous existing papers), and have provided modest comments on the draft.
Was I wrong to expect a bump in position for my efforts? I barely got a mention in the email to co-authors.
This reminds me of a suggestion I heard: to avoid giving a co-author order on early circulated drafts.