The new GUI in FreeNAS 11.2 (11.2-U3) seems to be calculating pool size differently (and incorrectly) for the pool health dashboard widget vs. the old GUI in FreeNAS 11.1 and prior.
My FreeNAS system is extremely straightforward, with one boot SSD, and one encrypted mirror (GELI) of two 3TB drives. Whereas all CLI commands (`zpool`, `zfs`) give accurate values for used/free space, the widget seems to be displaying only ~half the storage available against the real value.
Attached output of `zpool list tank` and `zpool upgrade` for the one data pool on the system, as well as a screenshot of the incorrect dashboard widget. Pool version is upgraded to the 11.1-U7 feature flags, only missing features device_removal, obsolete_counts, and zpool_checkpoint, none of which seem like they should in any way impact utilization calculation.
# zpool list tank
NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
tank 2.72T 1.84T 902G - - 26% 67% 1.00x ONLINE /mnt
Some supported features are not enabled on the following pools. Once a
feature is enabled the pool may become incompatible with software
that does not support the feature. See zpool-features(7) for details.