The bug

Using a full stack of lodestone compasses on a lodestone in creative mode gives player another lodestone compass.

How to reproduce

1. Go to creative mode.
2. Place a lodestone somewhere.
3. Get a fresh compass.
4. Click compass on lodestone once.
5. Click the lodestone with the lodestone compass.
6. Observe that there is only one lodestone compass in your inventory.
7. Click the lodestone with the fresh compass until you have a stack of 64 lodestone compasses.
8. Click the stack of 64 lodestone compasses on the lodestone.

Expected result

You would not get any more lodestone compasses.

Observed result

You get one more lodestone compass.