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THERE IS A FIX:
MASSAGING DOES WORK, if done properly. YMMV. The more you do, the more it fixes. It took me about 70+ massages in total to get it to almost disappear.
I was skeptical at first when I saw a few people mentioned it earlier. I tried it, and didn't work. But I realized I massaged incorrectly. I was massaging on the spot.
The trick is NOT to massage at the spot itself, but to the right of it. So with your dark spot on the lower left, massage it to the right of it. If you are triggering the multitasking menu from 3D Touch, then you need to move your massage spot further right. Try massaging it from down to up, up to down, further and further away.
Treat it like you are pushing the bubbles out to the edge of the screen protector. You don't directly massage on top of the bubble, you push from the side of it and slowly massage it out.
It has greatly reduced my pressure point now, though if you look closely it's still there. It's almost night and day difference. Hope this helps!
dL