Currently the only repro I know is matching a text that has many `\n` characters in sequence, and matching it with `(?:\t|\s|\n|\r)*` (seems like the character `\s` is the culprit)
Edit: I realized my regex was checking duplicate items. i.e: `\s` already means "all whitespaces", not just "space" (what I thought it was). So using just `\s*` doesn't cause a crash.
But still it shouldn't crash because of a wrong regex.