I ran some personal tests on the PWS a couple of days ago. I'm pretty sure there's nothing wrong with it. I think the problem is that in Fdevs attempt to stop the SLF exploit they accedentally made it so asteroid content doesn't spawn untill you're right on top of them. I'm sure it will be fixed, but it might be a bit more complicated than fixing the scanner.
It's not true. Pulse Wave Analyzer is still bugged. The problem is, when you scan, nothing appears, if you fly slower and wait 20-30 seconds, scans will appear. There is a "workaround", which is ridiculous, to fly Flight Assist off and rotate the ship to find out that the asteroids are scanned in the back space, not frontal. Also, many Void Opal cores are weak, even if it says "pristine" reserves and I know how to mine, I never drop in the "gap of death" and know where to search for cores. 7-8 months ago, even a small Void Opal spot was rich in asteroids and PWA worked nice back then. Frontier has nerfed the opals in a patch, 3-4 months ago, when they "balanced" the resources in spots.
Void Opal mining is still doable, just it needs more time, the load is smaller. Some people do not mine deep core for profit, for that, laser mining exists, some people are mining deep core because is more challenging, more relaxing and involves a bit more gameplay. Laser mining is staying with a coffee and hear the money coins roll. Sure, it great to be a rich commander and I want a Carrier myself, but doing it by enjoying and sensing that you have to earn by working. Just not that hard to extreme, by not fixing the PWA.
Issue tracker is full of complains and I thing they left it unfixed intentionally. Why? I have no idea. They must have a reason.
Still, the game is great and let's enjoy it

o7