known issues (#7085)

Signed-off-by: Sally MacFarlane <macfarla.github@gmail.com>

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## Next Release
+## 24.5.0
 
 ### Breaking Changes
 - RocksDB database metadata format has changed to be more expressive, the migration of an existing metadata file to the new format is automatic at startup. Before performing a downgrade to a previous version it is mandatory to revert to the original format using the subcommand `besu --data-path=/path/to/besu/datadir storage revert-metadata v2-to-v1`.
@@ -12,7 +12,9 @@
 - Receipt compaction will be enabled by default in a future version of Besu. After this change it will not be possible to downgrade to the previous Besu version.
 - PKI-backed QBFT will be removed in a future version of Besu. Other forms of QBFT will remain unchanged. 
 
-### Deprecations
+### Known Issues
+- [Frequency: occasional < 10%] Chain download halt. Only affects new syncs (new nodes syncing from scratch). Symptom: Block import halts, despite having a full set of peers and world state downloading finishing. Generally restarting besu will resolve the issue. We are tracking this in [#6884](https://github.com/hyperledger/besu/pull/6884)
+- [Frequency: occasional < 10%] Low peer numbers. More likely to occur on testnets (holesky and sepolia) but also can occur on mainnet. Symptom: peer count stays at 0 for an hour or more. Generally restarting besu will resolve the issue. We are tracking this in [#6805](https://github.com/hyperledger/besu/pull/6805)
 
 ### Additions and Improvements
 - Update "host allow list" logic to transition from deprecated `host()` method to suggested `authority()` method.[#6878](https://github.com/hyperledger/besu/issues/6878)