Since I updated to Cura 2.6.52, the software is no longer creating brims. I’m using it with a TAZ 6.
Sorry to hear you are having troubles. When you say you updated to Cura 2.6.52, is this from a previous version of Cura 2.6.xx or from Cura original?
Updated from Cura 21.08 on Windows 10. I went back to 21.08 so I could print brims again.
It appears that the build plate adhesion isn’t set up correctly under the recommended print settings on Cura 2.6.52. We have created a ticket to address this. It can be found here if you would like to follow it: https://code.alephobjects.com/T1449
If you toggle to the custom setting, brim can be turned on under build plate adhesion. You can also adjust some other options there as well should you so desire.