The 0 cm issue appears to be back. I am looking at Mom’s T914728 profile, specifically at a triagulatiion among people named Hixon see A608811 aka Susan. At Ancestry Susan is reported at 7.1 cM, gedmatch at 22. However, I can Susan’s father A026499 is also in the group.
I can tell from its location and shared matches this will be likely a valid one on a specific line vs pile up.