Is there any known issue with dedup on truenas core 13.0?

dedup: DDT entries 93359872, size 820B on disk, 182B in core

bucket              allocated                       referenced
______   ______________________________   ______________________________
refcnt   blocks   LSIZE   PSIZE   DSIZE   blocks   LSIZE   PSIZE   DSIZE
------   ------   -----   -----   -----   ------   -----   -----   -----
     1    86.2M   10.4T   10.4T   10.4T    86.2M   10.4T   10.4T   10.4T
     2    2.66M    319G    317G    317G    5.47M    654G    650G    650G
     4     121K   11.0G   10.9G   11.0G     583K   53.0G   52.5G   52.9G
     8    5.75K    317M    302M    307M    60.6K   3.22G   3.06G   3.12G
    16      575   16.8M   14.9M   15.9M    12.2K    360M    318M    340M
    32    1.14K   52.0M   48.6M   49.4M    48.0K   2.03G   1.89G   1.92G
    64      564   65.8M   65.8M   65.8M    56.7K   6.71G   6.70G   6.71G
   128       28   1.86M   1.84M   1.88M    4.71K    326M    321M    329M
   256       12   1.02M    758K    773K    3.80K    309M    222M    227M
   512        2    144K    132K    134K    1.69K    118M    108M    109M
    2K        1     16K     16K   17.4K    3.25K   51.9M   51.9M   56.6M
    4K        1     16K     16K   17.4K    4.53K   72.5M   72.5M   79.0M
   64K        1    128K    128K    128K     112K   13.9G   13.9G   13.9G
 Total    89.0M   10.8T   10.7T   10.7T    92.6M   11.2T   11.1T   11.1T