If VRCObjectSync objects start disabled (for example: their parent object is disabled by default and later enabled through a toggle button) they don't properly sync with remote users for things such as it's Transform and Active state.
This started occurring with patch VRChat 2025.1.3 - one week prior this functionality was working. World SDK ver. 3.7.5 used, however 3.7.7-beta.1 was tested and also shows the bug.