About new width rule in AD 21

[mulfycrowh]

Here attached the Design Rules Check

[mulfycrowh]

Usually in other projects preferred via is applied.
I also kindly remind that the width rule under BGA doesn't work anymore...
There is an issue but where ?

[qdrives]

Part of the problem is that Altium also has track width and via properties tied to each net. If you go to the netlist editor and edit a net, you will also see this information.
Good thing is that it remembers what you last did for that net. The bad thing is that it better remembers the wrong settings 😣

[qdrives]

One thing I once did to restore a zoom-all issue was Design / Netlist / Clean all nets.
Another thing to check Right click on the track within the room and select Applicable unary rules.
Also, you may want to change the rule to "TouchesRoom" and not use "WithinRoom". There is a slight, but crucial difference between them.