Tooltip cancels itself for certain sources

[Ketrel]

Issue description:

For abilities, mounts, and pets: tooltip shows while hovering For toys and items in bag: tooltip shows for less than 1s then vanishes
For equipsets: no tooltip at all (so I think this may be unrelated)

How to reproduce:

1. Disabled all addons but Neuron on new toon (for all but equipset test)
2. Dragged something of each type to a bar
3. Hovered over each in turn

Technical info:

• Addon Version: commit b015ccb
• Client: Retail
• Client Patch Version: 10.0.2