It works exactly the same in v8.3 (2018) (I've just tested it to be absolutely sure)
Remember that it's all just new v8 builds - v8.3 and v2018 are just marketing names
What may cause it not to work is if you are running a setup with "external mixer" audio settings
In that case VDJ doesn't handle the mixing (mixing is handled externally as the setting suggest), so it can't decide if anything like effects is done post-fader
Some controllers have the "external mixer" mode setting as default
You can easily check it in the audio settings:
