Blockchain go to "Processing queued blocks for slashing detection"

[CoNETProject]

Hi there,

I developed a POS chain with GETH (version 1.14.3-stable-f6388d0b) & beacon.
The chain running great & the block come to 448,593.
I have over 70 nodes to maintenance the chain until I copy a full node's file to another new node.
Then I try to launch the new node (geth & beacon & validator) to join.

Then the entire chain stops producing blocks and enters “Processing queued blocks for slashing detection”

time="2024-08-04 23:40:39" level=warning msg="Execution client is not syncing" prefix=execution
time="2024-08-04 23:40:43" level=info msg="Processing queued blocks for slashing detection" currentEpoch=74821 currentSlot=448926 numBlocks=0 prefix=slasher
time="2024-08-04 23:40:43" level=info msg="Pruning old attestations and proposals for slasher" currentEpoch=74784 prefix=slasher pruningAllBeforeEpoch=70688
time="2024-08-04 23:40:43" level=info msg="Done pruning old attestations and proposals for slasher" elapsed=217.291µs prefix=slasher
time="2024-08-04 23:40:51" level=info msg="Peer summary" activePeers=39 inbound=20 outbound=19 prefix=p2p

My question is:

1. How long the chain can finish the "slashing detection" goto normal?
2. Is that can be a kind of "attack" to a POS ETH?

Thanks