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Veteran's awareness has the line "+10% to all Elemental Resistances and maximum Elemental Resistances while affected by a Non-Vaal Guard Skill" when using a guard skill (tested with molten shell on two different characters) I received the intended bonus of +10% to all elemental resistances. I also received +10% to all maximum resistances instead of +10% to all
elemental resistances. Either there is a mistake in the description of the keystone or an error in it's implementation.
Thanks for your report, we'll look into this.