The default, Core Gui Humanoid health bars on the top right of the screen are missing on PC and mobile devices. I have not tested if this is the case on console.
Repro:
Join any game and take damage. The core gui health bars at the top right are missing. Bug occurs 100% of the time.
for the Federal Agents at roblox that might not already know, FFlagEnableAlwaysOpenUnibar2 being set to true is the reason the health bar is missing when not using the new menu
This issue should be resolved. Thanks for bringing this to our attention. Going to close the thread, but please let us know if you are still having issues.