5.1 DTS surround sound working incorrectly

When playing any Dolby DTS 5.1 file, the surround channels are not working correctly. The rear left channel will cause the rear left and front left speakers to both sound. The rear right channel will cause the rear right and front right speakers to both sound. Clearly, VLC is doing something with the surround sound which is better than pure stereo, but the bug causes the surround effect/image to be massively diminished.

On Windows "Movies & TV" app, the same exact test file causes each speaker to sound on its own, as expected.

The issue occurs when playing 5.1 Dolby DTS files such as demo videos in https://www.demolandia.net/cinema/dolby-demo-trailers-hd/page-8.html or https://drive.google.com/file/d/0B4nYAKUiVpepY1NuQW5ER3l3SXc/edit

The issue does NOT occur when playing 5.1 files which aren't DTS, such as those in https://www2.iis.fraunhofer.de/AAC/multichannel.html

Windows 10, VLC 3.0.8

More details: https://www.reddit.com/r/VLC/comments/g74c3y/unfortunate_big_flaw_in_51_surround_sound_which/