Magento 2.2.5 Product attribute “use in search” RESETTING after index:reindex

Question

UPDATE:: Today i discover that happen when the cron run index:reindex

How can I fix?

Today during configuring manufacturer attributes I found a bug or however an anomaly on Magento 2.2.5
I, setting "use in search" on "Yes" in the product attribute, but after a search on the frontend (the website return true result only the first search, after not found nothing)
The product attribute get on "No" completely alone.

Answer 1

I had the same issue when I used Mirasvit_Search module. Maybe it is related to your issue as well. After I added a product attribute to Mirasvit's index the issue has gone away.