[BUG] [GPS] [LINK] GPS Drift when linking fails to link, prevents future links.
If one is looking at the list of keys to link to, and selects one, and then the device does a very brief gps drift/jump, the link does not go through. That's fine, drift can happen. However, the target portal is removed from the available list, and can never be linked to again. A force-close is required to enable linking to the target portal.
This happens very frequently while doing starburst-type microfielding. The target portal in the attached screenshot is my couch portal, so I massively farm it for keys, then link back to it. I then zip up the fields.