I've noticed this more and more recently where Bonvoy earnings when translated from other currencies to USD are massively off in their exchange rates, resulting in a significant shorting of points.

To be clear: this has always happened - rates were used that were massively to the advantage of the property/Bonvoy by 10-20% in many cases - and Bonvoy stood behind their right to "determine" exchange rates. What's going on now doesn't just seem to be 10-20% but much, much more. A few recent examples:

A stay in Dubai that was 115 AED in incidentals should be approximately 31 USD - and this exchange rate is pegged and hasn't changed in two+ decades. So this should result in 310 points + elite bonues. Posted as 63 points....80% less than it should.

A stay in London that was 116 GBP or 147 USD should result in 1,470 points + bonuses posted as 254 points....82% less than it should

Several stays in Euro have posted corrected, but had another case in Poland where it posted nearly 75% less as well and was eventually corrected when I contacted support. Has anyone noticed this?