Audio resets when moving playback position

[VGBoy]

SLADE Version: 3.1.11 Operating System: Mac OSX Mojave 10.14.6

Issue Details: When I try to move the playhead to a different part of an audio file I'm listening to, the whole track restarts from the beginning. A way I tried circumventing this was holding down the mouse button at a certain position, but the slightest mouse movement or releasing the mouse resets the audio playback.