Normally, in peaceful mode, if you don't attack enemies, they won't chase you.
But if you wear a personal laser defense device, it will fire at enemies, but they won't attack; they'll start attacking you only if you attack directly
[0.10.x] peaceful mode - enemy not waking up
Re: [0.10.x] peaceful mode - enemy not waking up
Thanks for the report, it is fixed for 0.11.16 now.