Previewing accessories with the Hair type while having an R6 avatar equipped will result in the text “The R6 body type doesn’t support this item.”, regardless if it is a hair that utilizes cages or not.
As per this reply to the original thread, I have refiled the bug as it is still occurring. CCing @yungzrk, this issue is still present as of 30/11/2025 3:02 AM GMT+8
Thank you for reporting this issue! We have since released a version of this menu, which no longer has this bug. Please feel free to refile this bug if it persists!