[RSS Feed/News] strange issue with recipients when creating a conversation, shows users who don't exist!?

[XenForo]

I took a quick video to demonstrate. Basically, anything I enter in the conversation recipient field will show as a possible user, even when none exists. Actual users who are entered work and they are showed with their avatar, while nonexistent members aren't. No server errors....

See video:


View attachment Desktop 2023.05.12 - 22.04.34.02.mp4

Weird! Any ideas? Thanks!
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