I am a student using Canvas. Two days ago, I had a text entry draft saved with over 900 words. I reloaded the page frequently to ensure the draft was saved. When I accessed the assignment today, the draft was not present. The work assigned by my teacher is long-form and suggests work over the course of multiple weeks, I had left the assignment saved in order to work on it later.

Why does this happen in multiple cases?

Why does this issue persist after years of complaints?

Is this due to poor design or storage of online files on Canvas?

Is there an unclearly stated limit to how long the drafts last?