FP %age glitch on cache page

[+Deepdiggingmole]

I had this in general geocaching topic forum and had no response from anyone from HQ and then realised as this is possibly a glitch it should be in this group 

 

I noted a cache that I have which up until recently had 100% (FP / finders) and though not a great number of finders this was a nice stat to have - namely ALL who have found it have given an FP. 
However - In mid Feb I noted that it has dropped to 94% - on checking I spotted that there were still X number of finders which matched the no. of FPs given 
I couldn't understand why and then I spotted the possible reason. One of the cachers is now only a basic member 

So either this is a glitch or indeed this is due to that elapsed membership that has now caused this issue - I believe I understand how the algorithm works in that it doesn't include any lapsed membership count thus if a premium member is now a basic this will affect the %age. 
My cache is not PMO and so will at some point get found by basic members but up till now all finders have been premium hence the 100% - though if I am right only finds by PM will count in the FP %age figure anyway
The reason the one member who was premium and is now basic is because they died and their membership lapsed only when the next renewal was due and it didn't occur. 

However I find it slightly erring that that FP is now ignored despite the fact that it was given when that member was premium 
Additionally it would seem that despite their FP now being discounted their find isnt ?? - surely if you dont count their FP in the algorithm, you don't count their find either (in the algorithm) 
That aside I do wonder why the decision to discount FPs for members who changed from premium to basic - at the end of the day they were premium when they awarded the FP (and would have had to have been as they wouldn't be able to award an FP) so why is the fact that they changed membership type is it then penalised in the %age figure. I appreciate the overall FP figure doesn't change but the %age figure is a nice stat to look at as a CO and through no fault of theirs. 

Or is this glitch due to some other issue 

[+capoaira]

This Issue exists since a long time.

 

The actual bug report I've made, was fixed, but the one you reported was discussed too. But no fix for that since...

 

 

 

[+Deepdiggingmole]

I will add that a comment about the glitch occurring following the most recent log - however in my case the %age figure always showed as 100 as each finder gave an FP and so as the number of finds went up - so did the number of FPs and the %age figure showed 100 and it remained at 100% after the last finder - so the issue of most recent finder logging wasn't causing any problem ... roll on a month and more - no further finds and yet I noted this drop in the %age figure - this occurred without any further logs (I say none further I did put on an OM log - but surely that shouldn't affect that figure ??)