Windows 23H2 10.0.22631.3672, NUC10i7FNH, Intel(R) Core(TM) i7-10710U CPU, 32gb RAM, Samsung SSD 970 EVO Plus 2TB (300gb free space)

Nethermind 1.32.4
MevBoost 1.9
Lighthouse 7.1

A month ago I had to rebuild the Lighthouse DB after a blackout and I switched from 7.0 to 7.1 . From that time I've lost 3 out of 5 block publications. The attestions normally are 99,9% ok. The clock is synced ok (otherwise the attestations would fail more often). Until a month ago in 3y I hadn't lost a single block pub.

The analysis of @chong-he was

chonghe — 15/08/25, 09:38
I think the reason is that during block proposal, the BN for some reasons doesn't send the block to the VC, and the block just stuck there at the BN, remains unsigned

and

chonghe — 05/98/25 01:28
I am sorry to hear. I look into your logs, it is the same issue as last time:
13:32:12.114 INFO Received local and builder payloads
After the beacon node received the block from the relay, it doesn't send to the VC, VC doesn't sign the block so the block proposal fails/timed out

I have full logs for the 4th of Sep. zipped if needed.