Issue Tracker is full of PWA bug reports.
Also, there are some asteroids that look like deep cores, but are not, they are just limpet hogs, so we'd prefer the PWA working as it was before June. It would be normal for the PWA to work, as this is it's destination, otherwise, it's an useless module.
The PWA scans in the back of the ship at first pulse, or if using Gameglass with PWA always on Toggle, it will display in front of the ship eventually, after 30-40 seconds, if your speed is very low, like 40-50m/s. Finding motherlods blindly is just waste of limpets and time. Sure I tried it, but I couldn't find more than a few, the game spawns motherlodes even on asteroids that you think they are empty, I have done that and found out.
Deep-core mining is fun, I do that for relaxation and the satisfaction is not the amount of tonnes, as I blow any type of motherlodes even if it's not a specific spot. Besides Bromellite, I hate it

))) Fools people that is a motherlode, but it's Bromellite instead.