https://bugs.winehq.org/show_bug.cgi?id=36772
--- Comment #13 from David Heidelberger (okias) david.heidelberger@ixit.cz --- This bug is present in OpenAL 1.15.1 (openal-1.15.1-r2), but it's fixed in OpenAL git repository.
So, if you notice this bug, updating to OpenAL git should solve it.
Also unreleased OpenAL has performance improvements for processors with SSE2 and SSE4.1 instruction sets (every cpu has included these instructions).