It doesn't conflict with uBlock as far as I can tell. A user recently opened a bug report about it potentially conflicting. I did testing and could not replicate. The issue could be caused by multiple extensions being combined together, but I'm unsure what that combination might be. If you have a test case that shows the issue let me know so I can investigate! FYI - I use both my extension and uBlock on some of my devices and have not had issue.