Questions about globals

[mivayan]

There seems to be a bug with globals. I did a Global Enchantment test in a freshly created game:

I created a game in 1.11.
I am ermor, enemy is impossible marignon, impossible mictlan. My pretender is named Silian.

turn20? marignon cast purgatory.

turn 49: I try to cast eyes of god
turn 50:
Eyes of god was successfull.
I try to cast well of misery with 120 gems (boosted +40)
turn 51 Messages:
My well of misery was succesfull.
Mictlan cast gift of health
turn 54 Messages: My mother oak was cast successfully. (+0 gems)

GE list:
1) Purgatory (marignon)
2) The eyes of god (ermor)
3) well of misery (ermor)
4) gift of health (mictlan)
5) Mother oak (ermor)

cast dispell at purgatory with 60 gems (+30)
turn 55 Messages: dispel failed.

cast dispel at gift of health with 60 gems (+30)
turn 57 Messages: dispell successfull

GE list:
1) Purgatory (marignon)
2) The eyes of god (ermor)
3) well of misery (ermor)
4) Mother oak (ermor)
5) -

I cast burden of time, with +0 gems.
turn 58 Messages: Silian has cast burden of time. Your global enchantment was overpowered by the existing global enchantement and failed to take effect.

I cast riches from beneath with +0 gems (only thing I had gems for)
turn 59 Messages: Silian has cast riches from beneath. Your global enchantment was overpowered by the existing global enchantement and failed to take effect.

turn 60 - no relevant Messages.
GE list is same as turn 57, Last slot is still free.
I try to cast wild hunt with 124 gems (boosted +74)

turn 61 Messages:
A global enchantment for silian. (wild hunt)
Your global enchantment was dispelled when another global enchantment was created. (the eyes of god is now gone)

GE list:
1) Purgatory (marignon)
2) Wild hunt (ermor)
3) well of misery (ermor)
4) Mother oak (ermor)
5) -

During the game there has been no other Messages about ais casting any global enchantment.

This bug is reproducable - just cast 5 GEs, dispel one, try to cast another. It should take the free slot but does not.

4) Not globals, but: is there any chance of getting the AI to understand that once my spellcasters have cast Arrow Fend, Wind Guide, and Mass Protection, they don't need to be cast 2 or 3 more times in a long battle? Gem conservation dang it!

I have seen the enemy ai cast one of these, then again after another mage summoned some skeletons. Perhaps not a bug since the freshly summoned skeletons did not have the protection.