[ADR] Fix empty items in the list (#339)

docs/adr/0006-fix-empty-item-in-threadview-339.md

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+# 6. Fix Empty item in ThreadView (#339)
+
+Date: 2022-04-27
+
+## Status
+
+- Issue: [#339](https://github.com/linagora/tmail-flutter/issues/339)
+
+## Context
+
+- Root cause: updated item fetch from `/changes` is inserted to `Hive` database without full properties
+
+## Decision
+
+- Not insert updated item to cache if cache not hit.
+
+## Consequences
+
+- No more items in the list without information