Yes, that is a known issue with SoF only as seen here:
http://www.eqemulator.net/forums/showthread.php?t=27429
That does not happen on Titanium, but Titanium has it's own stat display issues for any level over 70. We are not sure why SoF causes that problem when over 75, but there are definitely some possible (hackish) work-arounds for it. One idea I was thinking of was that if a character is over level 75, we could have it set one of their item slots to add their base hp/mana/end to the item before sending it to the client. This would simply be to make it so the client shows the appropriate amount of hp/mana/end. The server always knows the correct HPs, and if you do a #mystats, it will show that you have the correct stats even though your client doesn't show them properly. I think the only problem this really causes is that it allows your HP bar to remain full while you take damage or use mana/end until you use the amount of your base stats that aren't being displayed, then it should start dropping like normal. It is more of a display issue than anything, really.