game crashs when dragging menu items on to the character menu

Frequency: on request/reproducable, multiple times
Steps: (works best freshly logged in)
1. Open the Duty Menu on the bottom right (or any other menu aside character)
2. Drag an item like you wanna put it on your hotbar (for example timers)
2a (optional) also works if you click away the icon first
3. Click the character menu
4. Game Crash!

https://www.youtube.com/live/_3S9w2w_mmg&t=427 (around the 7min mark)
discovered/explained by Caetsu live on stream.
you can see multiple people trying and crashing on stream and chat. (will add timestamp later when YT lets me)
thanks to AgentMoniker_FN for discovering that it even crashes when click the dragged item away first.