Are you experiencing the same?
Some players report that bases just fall apart. One clan said that 30 minutes ago their tower was still there but then only some parts were left.
Happened to me too now.
My farm base is nearly gone overnight without any kind of raid or upkeep issue.
It just fell apart.
Is this due to Rust. Did the update break anything?

What have you got for your settings in server startup ?
-decay.scale  ?
-decay.upkeep true or false
and are you using a NoDecay type plugin ?

I have none of these.
The only thing I changed lately was to add the Cupboard Limiter plugin.
So, by now, I can only think of that cause it just started happening these days.