I am running the latest version of Notepad++ 6.3.2 for Windows. Trying to do a "Find" using "Regular expression" without the "matches newline" checkbox checked on the following sample two lines text file.

```
hello
world

```

Search pattern `hello.*world` matches on nothing which is expected as "matches newline" is not checked (it is matched when checkbox is checked). However, pattern `hello\s*world` matches the two lines above which is a bit unexpected as "matches newlines" is NOT checked. I think an older version I used some time back didn't have that feature / bug. It is a bit annoying when I want to match on single lines only, with trailing white-space characters. 

Is that expected?