Steps to reproduce
I have frontmatter sections in my notes that follow this general pattern:
title: Some title
tags: #tag1, #tag2, etc.
Before the recent change to frontmatter formatting, the tags were captured in the tags pane and were searchable.
The tags no longer auto-suggest, show up in the tags pane or are searchable - they are treated as normal text.
Please seach before posting. this has been covered before several times