Marking finished gets undone if you use browser back button

[maco]

1. From my plantings page, I clicked "mark as finished" on a planting and confirmed it without a date.
2. This redirected me to the page for that particular planting.
3. I hit the back button in my browser.
4. I now see the plantings page as it was before I marked it as finished.
5. Without refreshing first, I mark a different planting as finished without date.
6. I am redirected to the planting page for the one I've just marked as finished.
7. I hit the back button in my browser.
8. I refresh.
9. Only the first planting is marked as finished. The second one doesn't "take"