Cannot re-save a plan that was loaded

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/report-a-bug/cannot-re-save-a-plan-that-was-loaded/
———————————————————————————

1. Create a plan.
2. Save it
3. Load it
4. Modify it
5. Tap save plan
6. List of existing plans opens, but no button to save a plan. If something is typed into the search box and nothing is found, the app says to press the button to save, but there is no button, see screenshot.

The purpose is to edit the plan and save it under the same name, but it’s impossible.