Deleting a space raises an error

[jon4s-creative]

Hi,

1. Create a new note
2. Add space
3. Backspace

"A bug occured, we prefer to undo your last action to be safe.

Message :
IndexSizeError: Index or size is negative or greater than the allowed amount"

[frankrousseau]

Thank you @jonasmonnier for reporting.

[j2oo]

I think this is the same problem which happens all the time on android with auto complete (Firefox with Samsung keyboard )