There is a limitation in the amount of drafts, only one per user.
- You only get one draft for an answer and one for a question. (If you start a new post, the old draft is cleared.)
The problem of this limitation for having only a single draft available is that users can see their drafts being lost because the system automatically overwrites them without confirmation (at least this happened to me, where I saved and left a question, and in the meantime continued answering other questions).
This is very unintuitive. You would not expect a draft to be overwritten (ie being lost) without consent.
Overwriting an old draft should at least be warned for before the draft is allowed to be overwritten, and ideally it should be possible to turn of the system that automatically saves the drafts such that you can not get an unexpected overwritten draft.