Strange warning when connecting dirt tracks to rd 1259

Please have a look at this AI upload Changeset #46150944. (Blue one)
All tracks I tried to connect to rd 1259 came up with a load of errors. Never seen that before.
Can someone please have a look. I rode there today and in JOSM you will find the traces from RAW data.
I’ve been here before and I am looking to connect to a track that is just 5km south.
(To though to try alone)

Can you show us the warning that you see?

Sure enough, no errors when I tried today. Will keep it in mind and take screen shoots if it happens again.