A bit of Googling produced these, but at least one is possibly a bug:

https://eu.battle.net/forums/en/wow/topic/6297782994
https://www.shroudoftheavatar.com/forum/index.php?threads/two-npcs-same-name-in-resolute.44206/

Like in the original Disgaea where the strongest sword had longer range than bows?

Also:
* Racism was certainly acceptable, and was even considered "good" and paladin-like.
* There's some absolute notion of "good" and "evil", which does not always correspond to what people generally think of as good or evil (see the previous point).
* It's possible, via arcane magic, to instantly heal the wounds of an injured person.
* It's not possible, via arcane magic, to instantly heal the wounds of an injured person; you need divine magic for that.

(Those last two points, obviously, were taken from different games.)

The magical traps that protect chests can be significantly more expensive than the contents of the chests.

- 99 suit of plate mail take up as much space as one ring
- No matter how badly you are injured, you will still be able to fight with full strength until you drop dead on the spot
- A full night of sleep will cure any wounds completely
- A entire group of giants can ambush you in an open field
- Hitting oversized vermin repeatedly over the had for hours will make you more intelligent
- In fact, you don't even have to hit them yourself as long as you are travelling along with the one who is hitting them over the head
- A key would work on every lock, but could only be used once

the medieval times are long behind us but there are still some medevil monkeys like tinye living in stone age... :-/

Going on a journey? Be sure to bring tents. That's right, more than one ... because each tent is apparently usable only once. And apparently cabins and houses are just as portable and disposable as tents.

Death was permanent; not even magic capable of bringing back the dead is able to fix it.

(I can actually think of some games where both these statements are true.)

That's what YOU think! Everyone was related back then!

Also:

Depending on the order you do things, a person can exist in two places at once. (I recently saw this in a speedrun of the non-RPG Zelda: A Link Between Worlds (where there were two Ravios in the shop, but I remember seeing it in games I do consider to be RPGs.)

Sometimes, death is the fastest way to travel.

The success of every action is pre-determined; if you are aware of this fact, and what the results will be, it is possible to accomplish feats that are extremely improbable.

While not from a medieval setting, here's another one:
A chain saw that is not capable of sawing up weak monsters is nevertheless capable of slaying a god.

And watch out: Some of the spells available in the store are really traps! There's one spell, for instance, that will make you *harder* to hit.

Another one, which I have seen in at least 2 different games:

Being blind makes it easier to hit your enemies.

Speaking of death: The monsters you slew always came back at the exact same spot. But on the other hand there were regions where you could kill every living thing and depopulate whole continents.

The one I had in mind is "Palin" from Baldur's Gate.

One is a minor character in Cloakwood. There is another one who appears in the Tales of the Sword Coast expansion. They are not related, and I believe it's just a coincidence/oversight from the developers they have the same name.

See also Anastasia from Avernum. There's one Anastasia who you can help, and there's a different Anastasia who appears as a boss.

They had a 5% chance of glorious success against overwhelming odds, balanced by the same chance of catastrophically fumbling the certain bets.

Anyone ever see the 80s movie "Excalibur"?

Armor.
That movie always brought home to me how hard it must have been to fight in that shit.