So 2.6 patch is now out, and while I'm not installing it until maybe a week or two have passed, the release notes point fingers at areas of the wiki that could need updating.
In the list, the following have raised some flags in me:
Cloud Projectiles | Updated Cloud Projectiles so they are cleared by Zone of Sweet Air
Magic Resistance | Spells such as Glitterdust, Contagion, and Otiluke’s Freezing Sphere no longer bypass magic resistance
Movement Effects | Movement effects from spells such as Entangle now relate properly with stacking or counteracting effects from spells or the environment — I'm wary about related changes to the Haste effect
Poison Immunity | Creatures immune to poison no longer visibly recoil in combat when hit by poison or disease effects — Check Poison resistance and spell interruption
Polymorph Self | Fixed inconsistencies, casting time and minor issues with Polymorph Self — Verify how Polymorph effect and Create weapon behave
Power Levels | Corrected the power level of several items and spells to make sure they interact properly with spell protections, such as Spell Turning or Globe of Invulnerability — Review Item levels among other thing. (Also more controlled systems = more boring)
Raise Dead & Resurrection | Raise Dead and Resurrection type spells can no longer be cast on living targets, only dead targets — Fuck, that was the least interesting way to fix a big bug
Recurring Effects | Spells and items with effects that refresh each round now reapply the recurring effect properly — See if it affects Wild Surge's "Area of Effect"
Saving Throws | Corrected saving throw messages and functionality on a handful of spells and magic items — Contagion?
Shapechange | Fixed inconsistencies, casting time and minor issues with Shapechange — Polymorph effect & Create weapon
Simulacrums | Simulacrums and Projected Images no longer incorrectly inherit temporary abilities from casters — Not sure which temporary abiity they inherited?
Wish and Limited Wish | These spells now behave correctly as level 9 and level 7 spells when interacting with spell protections — Verify if it really is "correct" and how it affects the Wish article
Missiles | Corrected a handful of labelling inconsistencies for missile ids
Missiles | MISSILE.ids now accurately label projectiles — Update Protection From Normal Projectiles, Slayer and similar sources of protection from normal missiles
SPLPROT.2da | Added labels and standardized SPLPROT.2da across Baldur's Gate, Baldur's Gate II and Icewind Dale Enhanced Editions
I can't cover BG1EE and SoD so that will have to be someone else's job or nobody's.
If anyone has points that raised their attention but can't afford to verify what's up or fix the wiki themselves, it might be useful to write it down in this thread for someone else to pick up in due time?
EDIT, known issues also have:
Haste Spell | The spell works correctly, but the combat log doesn't reflect the correct double speed/damage that is taking place — Sounds like my Haste effect testing hell wasn't over after all