If you open a section while things are being filtered out because of searching, then exit the new section back to the original section the search bar is cleared, but the section is still filtered

Minecraft Version: 1.21.1
Mod Loaders: Fabric/NeoForge
Mod Version: 0.6.7

fixed in 0.6.8; FC now includes a setting menu attached to the search bar that lets you choose to keep search terms when you go back to a parent screen.