I thought I’d just mention that it would be good not to look much for a solution in posts about the FWL13, like this one
As the FWL16 keyboard setup is fundamentally different.
FWL16 keyboards are full usb keyboards, with a keyboard controller that lives in the keyboard. Whereas, the FWL13 uses a traditional laptop setup of the keyboard just feeding its raw keymatrix lines to the mainboard. The role of keyboard controller is done by the EC chip on the mainboard on the FWL13. Being so different, the source of problems I think is more likely to be different.
I’d look more to similar problems in FWL16s. Perhaps like this, community.frame.work/t/solved-keys-stick-and-repeat-after-being-released/51153.
If the magnet was too high, making it easier for the keyboard to loss contact & that was your issue, you could look for usb disconnects in dmesg. And moving the keyboard to a different location should stop the issue, if that was it.
Pin 7 is listed as just a duplicate, an extra gnd. Pin 1 being the 2nd gnd.