Hello, I have been having the weirdest issue lately. I am working on a 6 layer board with 3 routing layers. I have a routing layer at the top, a inner layer, and a bottom routing layer. Currently, when I place a via it will let me place it right on top of on of the inner traces with no DRC. I first noticed the issue when I randomly spotted a via going thru an inner trace. I tried to slide the via away and expected the inner trace to 'bubble' around it like normal but it didn't. I tried to place a new via and it allowed me to do the same thing. One interesting thing is that if I slide the via right on top of an inner trace, exit the slide command, then initiate the slide again, it bubbles that inner trace out of the way, but if I drag that same via over near any of the other inner traces it acts as if they aren't even there and will let me place the via right on top of them again. Also, if I go to 'slide' an existing via that is going from top>bottom then back to the top again it will let me place that via on an inner trace and the same issue repeats; however if I 'slide' a via that goes from top>inner or bottom>inner it will 'bubble' the inner traces out of the way like normal. To my knowledge all of my constraints are set correctly, on-line DRC is on, and none of these are blind/ buried vias. I have also ran DB doctor but it found no errors. This is the 4th revision of this board and it has not been an issue at all before this point. I was able to go back and forth between older revisions of this same board and the 'slide' function was bubbling the inner traces away as it should on the older versions. Placing a new via right on top of an inner trace caused a DRC error properly as well, but when I returned to my current revision it was still not working properly. However, for some reason a day later now all of my previous revisions of this board are exhibiting the same behavior. I am really hoping this is something super simple because this issue has caused a lot of delays on my end. Any help would be greatly appreciated.
I am running version 16.6 SO60