[MegaBlues]

Foraging, such as double-clicking on wood piles or medicinal plants, causes the information window to appear for the last material gathered.

Example:

You collect 1 Yama Blind.
You collect 1 Wellwart.
The medicinal plant crumbles.

This would cause the information window for Wellwart to pop up.

EDIT: This is also a problem with chests, if that helps you diagnose the issue. Anything that you double-click which gives you items, it seems.