Version tested: 2023.3.0b9

Reproduces on both MacOS and Windows

Steps to repro: 

1) Start new project, import VFX graph, create new graph, toggle Blackboard

2) In property tab, create two empty categories.

3) Create a few properties and try dropping one under the first empty category

4) Notice how it flashes expanded state and collapses back again

5) Try clicking on expand arrow, observe it doesn't work as exepcted

6) Whenever you try dragging other properties all categories auto collapse

There's also an issue that sometime entire Proeprties global category collapses when you try dragging out a property.