Board Thread:General Discussion/@comment-28171999-20190208002539/@comment-25936766-20190209003458

Sentry 616 wrote: There was one retcon. The Maidens. That's it. The lore isn't messy. Actually that's not the only one. Aura was retconned twice. First it had to be activated to shield the user (Pyrrha asked Jaune why he didn't activate his Aura back in Vol.1). Then came the Aura WoR which stated that it did that passively. Then came Vol.5 and Ren stated it had to be activated.

Vol.5 also retroactively makes Jaune an instant expert because Ren states Aura is hard to use at first, and Oscar himself had difficulty with it and he's got Ozpin on his head to help him out. While Jaune had no problems in using his to avoid injury from the get-go.

There's also Wind Dust going from Green to White in Vol.3 and Gravity Dust going from Purple to Purple and Black in Vol.5.

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..........Granted, that's all I can think of for retcons and even combined they don't make the lore a mess.