Hi MrRiker30
Unfortunately positioned sound is broken in chromium. It isn't an issue with Construct. A couple of Construct users have logged bug reports with the Chromium team and I recently added a small project to that bug report using simple javascript to demonstrate the issue. Hopefully they can get it solved in one of the next few releases.
As NWJS is based on Chromium, the issue is present there and unfortunately there are no workarounds.
Your best course of action is to move to non-positioned audio and, if you want to, use the fade volume action with appropriate events to change volume based on distances.
Sorry for the bad news.
Links to construct and chromium bug reports:
https://bugs.chromium.org/p/chromium/issues/detail?id=1041182
https://bugs.chromium.org/p/chromium/issues/detail?id=1002093
https://github.com/Scirra/Construct-3-bugs/issues/3578