I can do exactly the same:
We tried it yesterday several times in EU and always the ranking was counted.
If it helps any - It’s also not showing item ID’s in clan at the moment - may be linked?
If it was a 100% correlation, why do you have multiple examples of people saying they saw loot in clan chat, and their GR clearances were not recorded, i.e. it’s not 100%.
Yet of 2 weeks pushing it has never failed me , nor my clanmates, not solo, not in 4 man. So yeh for us it is still standing on 100%. Thats 40 people for whom it’s working. The negative reports from others brings that number down a bit (0.11%). But they are sources without further explanation. Do they fully understand how the method works and have they carefully followed it. Are they saying it did not work by memory or have they carefully made notes. Im not saying you are 100% wrong or i am 100% right. I am just saying that for some (40 people) this seems to be working for 2 weeks straight now with no exceptions…