The 3.1.1 update does not seem to resolve issues when using the Create Mobile Map Package gp tool. Here's a screenshot of the model I've been using for about a year now w/o issue:
Here's a screen vid running the model using the extent of one building
https://www.screencast.com/t/79bMprW8Pke
As you can see, the model appears to be running but no messages are output, nothing is output to the output dir specified and eventually, I have to kill Pro using task manager.
Here's the Python call to run the model with inputs in the screencast above:
arcpy.ImportToolbox(r"C:\temp\sdm-services\IPF Indoors\IPF Indoors.tbx")
arcpy.IPFIndoors.CreateMmpkAndShare(
Output_MMPK_file=r"C:\temp\mmpk\IPF Indoors v12.mmpk",
Extent='-9406147.94364015 5271099.64778317 -9405881.40931504 5271276.60746578 PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0]],VERTCS["WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PARAMETER["Vertical_Shift",0.0],PARAMETER["Direction",1.0],UNIT["Meter",1.0]]',
Folder="Indoors",
Groups="'Esri support';'Campus Infrastructure';'IPF Training Team';.SDM-Managed-Content",
Input_Map="'IPF Indoors MMPK v1.2.0'"
)
Here's a screenshot including the table of contents. This map was shared successfully with the Create Mobile Map Package ribbon tool using the entire campus extent as reported earlier.