In 1.21.1, enabling entity hitboxes through F3+B then opening your inventory would not display the player's hitbox in the inventory render when the graphics option was set to Fabulous, however in 1.21.2-rc2, it does.
Here is a screenshot with hitboxes enabled in Fabulous graphics in 1.21.1:
Here is a screenshot with hitboxes enabled in Fabulous graphics in 1.21.2-rc2:
Attachments
Comments 3
Hitboxes rendering above entities in inventories is tracked at MC-270470, so I have removed that part from this report.
Thank you for your report!
After consideration, the issue is being closed as Working as Intended.
Please note, that mechanics of the game may change between updates.
Things such as graphics, sounds, world creation, biomes, redstone, villagers, and animals may not work the same in current versions.
Full Version History – Snapshot Version History – The official Minecraft feedback site
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support (Technical Issues) – 📧 Microsoft Support (Account Issues)
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
I can confirm this issue; this also seems to affect the hitboxes of armor stands in smithing tables and vehicle entities like horses in their inventories.