0U child devices appear as 0.5U

[llamafilm]

netbox-reorder-rack version

v1.1.1

Python version

3.12

Steps to Reproduce

1. Create a new rack
2. Add a 1U device
3. Add a 0U child device with no position
4. Click reorder rack

Expected Behavior

Correct behavior is undefined, but it should not be possible to add a child device to the rack.

My preference: Display child devices in a separate box, and allow dragging them into a parent device. There would need to be some kind of UI indicator of parent status.

Observed Behavior

The child device is shown in the right-hand list of un-racked devices with 0.5U height. It lets me drag it into the rack. If I try to do that and save changes, it logs Internal Server Error: /api/plugins/reorder/save/176/.

Also — the unracked devices graphic is weirdly offset to the right of the page, past the extent of the top bar.