Thank you so much for these! I found a weird issue when trying to use one of these icons in Godot 4.3 on a MacBook Air with Retina display. The icons appear smaller than they should when applied to a class_name, but render correctly in the FileSystem. I think this is probably a Godot bug though, lots of Godot + high DPI display issues out there, just FYI!
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No worries, already went and created a bug. 😅 https://github.com/godotengine/godot/issues/96069