For me, it once caused an issue once when I thought I was deleting files to make space for /boot/efi/ being at capacity (dual booting issues at the time) when in actuality I was just moving files to an impromptu trash can created on /boot/efi (so the lack of space remained the same lol), but on numerous occasions, it has actually saved my ass and allowed me to retrieve documents that I realized I needed to look at again.
The only other quirk is it straight up ignores all options, so I've tried to delete interactively (rm -i) and then had to use trash-list to view the deleted files