Saving the Sub-agents admin tab could turn sub-agents off and clear their system prompt when one of the limits was still 0. Older releases accepted 0 there, also from the SUBAGENTS_MAX_* environment variables, but the tab now fails to load such a value and shows everything blank and switched off, so saving writes that blank state back. A limit of 0 now shows as empty, meaning no limit, which matches what sub-agents already do with a 0 while they run.
Fixes#33609
Classic298andGitHub
f3ef8b9491