Dread Secret has a listed duration that says "until the start of your next turn" but for which effect is it?
The resistance loss is stated to last "until the end of your next turn" and the only other lingering effect is frightened, which has its own duration rules.
I agree this looks like a typo. There is no good reason to make fear effects go away at the start of your next turn, or to have specific information about an effect lasting until the end of your next turn in the specific tiers of success. This is a good candidate for errata.
I did consider it applying to the frightened condition. It would be the first time I'd see "unless specified otherwise" be relevant. It's just not specific enough for me to be confident about it, especially since they already went out of their way to specify the resistance loss duration.
If this is a typo, what's the best place here to drop this info for an errata fyi?
I'm curious. Have there actually been instances of frightened having a set duration instead of it naturally decaying every turn? I kinda want to see what that text looks like if it exists.