Found this old report while clearing out the UCCCP bug tracker:
You can no longer direct followers to use shrines with Survival Mode enabled. Also, I have had several followers contract diseases and console would show they were applied by ccqdrsse001-survivalmode.esl. Disabling survival mode would allow for them to use the shrine when directed but did not clear the disease (needed to use "removespell" and FormID of disease for that).
Survival mode is using magic effects as an applicator for these diseases but doesn't seem to have any condition set for it being player only
Will take a look into this when I have some time