Bug: Exiting a post always displays a 'unsaved changes' warning even if there are no unsaved changes.

[bacoords]

I'm guessing we're updating an entity prop somewhere that shouldn't be.

[zaguiini]

Yep:

create-content-model/includes/runtime/src/hooks/use-fallback-value-clearer.js

Line 54 in d74d16d

setMeta( { [ metaKey ]: '' } );