issues after 1st June Patch

[Criteria]

 Im having problem with battery drains after 1st June security patch update. Any solution for this? RCS service drains battery rapidly. I never experience this issue since may update. 

[alexhdkn1 · Accepted solution]

It's a Oreo bug, sometimes there is RCS sometimes there is android system

[vinaa]

I haven't received June update yet

[ossill]

Same here, clear change in battery change after the update from April to June update.

If this is an Oree bug, why it didn't occur with earlier patches?