I'm noticing some pretty severe mana regen bugs. Both problems with the character sheet listings, and actual values. First off, I've added up all my mana/5 regen (since I'm a shaman, these calculations are made easier since any FSR regen I have will come directly from listed mana/5), and I should have 141/5 mana regen coming from gear. I'm resto, so thats it, 141/5, I don't have the elemental talent. Now, my character sheet shows 121/5 as my FSR regen value. Problem #1.

After some testing while spam casting, I've come to the conclusion that I get about 45 mana back per tick (2 seconds), give or take. This value is in line with the character sheet listed value of 121/5 FSR regen. I'm missing 20/5 mana regen that I should have from my gear. Problem #2.

On top of all this, there are some very strange issues regarding specific items/enchants and their mana regen. They could be directly bugged, and thus causing the issue, but I'm not convinced, as I have seen some discrepancies even within these bugs. Sometimes these statistics change themselves around. But anyway, things I've noticed as issues:

(The following arguments will be based upon the assumption that the character sheet values are correct with what is happening with your character, in accordance with the above statements)

The 6 mana/5 chest enchant. Does not show up on character sheet. (Strange caveat to this, when I stripped down to naked and equipped JUST the chest piece, it was added in correctly. If I take it off when I'm fully equipped, the chest enchant does not show up on the character sheet).

The exalted scryer inscription, combined with my Dragon-Quake Shoulderguards. This is where it gets fun/strange. The shoulders have 7/5 innate. The scryer inscription gives 6/5. That's a total of 13/5 mana regen coming from that item, supposedly. While fully equipped, un-equipping this item will drop me by 7/5 mana regen (enchant bugged?). While naked, equipping the item will increase me by *12/5*. Some clever addition here.

Girdle of the Gale Storm. This is just a level 88 blue item with 6/5 innate mana regen. This mana regen does not even show up on my character sheet when I equip or unequip it. Nothing at all.

Other worthwhile note: My bracers have the old school 4/5 mana regen enchant on them. This enchanted item works correctly giving me a total of 10/5 regen in all scenarios (naked, fully equipped). Perhaps the issue is only with new TBC things?

Other worthwhile note: Who the hell designed the wording for these enchants? Every single goddamn enchant that gives mana regen that I have (4 or 5 unique enchants) is worded completely different. Perhaps this is the root of the issue, certain enchants are coded improperly and malfunctioning?

Bottom line is, you never know how your mana regen will actually be affected when you equip or de-equip an item with mana regen now.

I'm hoping others can corroborate these issues, and hopefully someone will pick up on this. As a resto shaman, it really irks me that I'm missing so much effective mana regen. I have zero faith in the in-game petition/bug report system, so hopefully this thread will result in some action (I haven't seen anything posted on these forums about this yet, and I'd expect something this big to be.)

Yes, I actually experienced that infinite mana bug only once on my shaman, on day 1 of TBC out in Hellfire. Lasted for about 30 minutes.

While I think a lot of us share your sentiments about in-game petitions, posting on a non-blizzard forum hoping for something to happen doesn't sound like the best idea either. While I don't doubt blizzard employees knows these forums exist and possible also read them, I doubt they'll be read so often as for instance the bug-report forums. You already have it all written up, copy-pasting it to say, the general forums and bug-report forums shouldn't take more than a couple of minutes.

If you want and I have your permission, I'll copy-paste your findings to the european bug-report forums as well, though I'm pretty sure that's like believing throwing something in a black hole should produce any effect :-).

Just thought I'd mention it since you went to such trouble documenting it, and it looks to be an easy to reproduce bug given the info you provided, so probability of a fix should be high.

Oh, and thanks for the posts both of you, I'll be sure to forward to the guild healers who are considering enchants ;-)

Just to throw in, I'm fairly sure we (two guild tanks)'ve noticed changes in dodge rating after re-equipping our (inscribed) shoulder items. On a related note, a guildmate had an issue where their metagem listed its requirements in grey (that is, some were unmet), unequipped and re-equipped an item (with gems) without changing it, and whammo, the metagem requirements turned white.

Something is very, very wrong with the on-login gear profiler, and has been for some time, as I recall something along these lines with the ZG enchants a while back.

Character sheet is not the right way to check if mana regen is bugged. Grab something like ItemBonusLib and Manaregen_fu from wowace and check hard numbers.

He tried hard numbers and it corresponded to the character sheet number.

I recently noticed the same issue with my character sheet
92 MP5 from gear
108 Listed MP5 in combat
300~ spirit x 15% regen in combat seemed to equate to only 16MP5 from my spirit at this point
Bangle of Endless Blessings proc (15% mana regen in combat) gave me about 30MP5

So for some reason my trinket 15% regen (8spi per) was twice as powerful as my talented 15% (16spi per), odd...

As for some overlapping items?
Robes of the Guardian Saint (Enchanted +6MP5)
Crown of Malorn (Enchanted +7MP5, no MP5 gem)
Forestlord Striders (Enchanted Vitality, 3MP5 and 9heal 2MP5 gem)

I personally have noticed something strange with the way that the mana regen is displayed in the character sheet, and it's not just a display error.

I noticed this first when I picked up a Band of Halos and swapped it for my Band of Unanswered Prayers. I should have noticed an increase in mana regen while casting, and a slight decrease while outside the 5s rule. However, both my listed in-casting regen and out of casting regen dropped by switching the ring in. On top of that, the actual regen was also lower with the halos band inside the 5s rule.

I didn't compare the values by just taking the ring off and putting it back on, but I'll definitely do that when I get the chance.

There was a similar issue after dying with the saph tanking enchant, where the enchant wouldn't be applied until you unequipped and re-equipped your shoulders.

And a friend had mentioned that the Honor Hold helm enchant wasn't giving the mana regen at all on a helm that does not have mana regen on it. She submitted a ticket and was told it was a known issue.

I've noticed this bug too. I've noticed a few things (at least for me), aside from the character sheet, and in combat casting.

For some reason, all of my mana regen items with "restores 7 mana every 5 seconds" don't stack with each other, and it is only those items that I noticed the problem.

I did the "strip naked", and started adding stuff back on, and what I noticed was that my hat enchant, my truestrike ring, and my tidefury gauntlets did not stack properly when I added them in after the first "increment" of 7. So if I put my tidefury gauntlets on, my truestrike ring and hat enchant didn't stack. If I put my truestrike ring on first, then the other two didn't stack.

For some reason, the chest mana regen enchant doesn't seem to work at all (I have HWL melee version chest). The bracer enchant (6 mana/5), and my whirlwind bracers regen DO seem to stack (at least with each other), but of course don't stack with the chest enchant (My chest enchant was broken even before I received Whirlwind bracers).

My brief hypothesis was perhaps somehow each enchant or mana/5 slot was somehow taking one "buff" aura slot. (maximum of 40 now right?). I have regen on each slot, so that's already 18 from gear alone, not counting sockets, and other random enchants. Could it be somehow we're being affected by the buff limit? I didn't try to "count" or anything at the time, and it didn't seem that even if I put my 7/5 gear on "first" that it affected the overall regen. However, even if I put my 7/5 gear on first, I had the non-stacking problem.

This is correct. It's related to the bug where set bonuses don't stack. What happens is that the set bonus is using an aura (http://thottbot.com/?e=Apply%20Aura%...tical%20Hit%29)
that is not unique. The bug happens because you have another identical aura from some other piece of gear and they don't stack for some weird reason I don't understand.