Hi!
When the cursor is positioned immediately after a folded range and I press backspace, the last character of the folded range gets deleted, but the folded range doesn’t get unfolded like it would if I pressed the left arrow key, or if I pressed backspace with the cursor within the folded range.
Same if I press delete with the cursor immediately before the range.
Wouldn’t it make sense to unfold the range when a character in the folded range gets deleted? Otherwise you could accidentally delete characters within the fold without realising it, since you don’t get any visual clues.