When I use the /locate command for Ruined Portals and Bastion Remnant the text says "The nearest %feature.ruinedportal is at block...". I remember this also happening in 1.16.0, and I have 1.16.1 right now. Also, the bold text was not bold in Minecraft, I simply put it in bold for detail, and I happened to be at a Ruined Portal when I found this bug.
Thank you for your report!
We're actually already tracking this issue at MCPE-79323, so I will resolve and link this ticket as a duplicate.
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