Seems like there are two cases:
After “swiflash -r”, FX30 draws high current after entering ULPM via le_ulpm_ShutDown() from a minimal test app. ULPM exit occurs on timer interrupt as expected. The red power LED isn’t shut off during ULPM entry. This state persists through reboot.
After installing, launching, and uninstalling a more complex app, current draw after entering ULPM from the minimal test app is sub-mA, as expected. The red power LED now shuts off during ULPM entry, and turns back on during return to active mode.