After updating my iphone se to 11.4.1 I'm finding that HomeKit is disconnecting and showing "No Response" for all accessories after running properly for a few hours. To recover I need to disconnect and reconnect the iphone's wifi. I assume this triggers HomeKit to reconnect to the accessories.
This worked fine on previous versions of ios including / up to 11.4.0, connections would stay active for days at a time without issue.
When investigating I find that HomeKit appears to drop what was previously a long running connection, and does not attempt to reconnect on it's own (it needs a wifi reconnect to trigger it). Restarting / power cycling the accessory does not reinitiate the connection.
Is this a known issue and is there a estimate for when it will be repaired? Is there a workaround? The wifi reconnect works but this isn't useful for long running for automation.