Distibuted backups doesn't clean up the deltas in the BRs

[ph7]

I have a test job where I test the distributed backup
They are both on a truenas SMB server

I have it running every 20 minutes and retension set up like this:

It's been working fine for a couple of days
But after an update (evening of 30th I think) it started to misbehave

The day before I had 8-9 Deltas to choose from, today it's a lot more.
so I upgraded to a6c50 without success

Here are the 15 oldest ones

And the 15 newest

And there are 109 of them. Shouldn't be more than max 11

And the distribution thing seems odd to me
All the snapshots on one BR and VM's on the other

But the T1-LAB-BCK-TEST2 seems a bit empty to me

This was a log one