Discussion on clearing content without your raid group.

[Reinha]

each person should be fine to continue their own progression

This, assuming the team is done progressing for the week. Getting mad at you for learning the fight further and having a chance at loot is very petty because those things can only help your group the following week.

If you show up to each scheduled raid day and don't reduce any chests from static runs it's none of their business what you do with the rest of your game time. However, getting yourself a clear and ruining the loot chests for your static would be pretty selfish IMO. (Unless it was an accident like if you joined a practice group which happened to clear.)