In-game bugs I've noticed thus far besides the ones I'm sure you're already aware of

Just two of them and since the bug reporting form (and other forms on the forums) is inaccessible at the moment due to the forum permissions needing to be tweaked:

1. Elyos Heiron Quest: Lepharist Poison Research
This quest was tweaked in 3.7 and it hasn't been fixed on Gamez. The required poison now drops from a named mob in 3.7 retail, "Synthesis Researcher Twisk", instead of the usual Synthesis Researchers. Twisk is nowhere to be found, cannot be located, and doesn't seem to be in the database.

2. Chanter Skill Word of Inspiration overwrites chanter skill Lucidity
I previously made a bug report about this but I sometimes I feel like that thread is sometimes overlooked, perhaps due to the number of frivolous reports made. Word of Inspiration (WoI) is a quick refreshing party-wide buff that often needs to be recast to be maintained. Lucidity is the personal buff that serves the same purpose but has a longer duration and adds additional magic accuracy. The bug is in that WoI overwrites Lucidity. This is incorrect. Lucidity should overwrite WoI and not be re-overwritten when recasting WoI on the party.