There is no longer a menu entry to report bugs in the in-game help menu. However this is still the recommended way to report bugs according to this article:
https://support.arcgames.com/hc/en-us/articles/360018161933-How-do-I-report-a-gameplay-bug-Using the chat command /bug (as recommended in the sticky in this forum) doesn't work either. Typing /bug in the chat does nothing. The game still auto-completes it as a recognized chat command, though. In one case typing /bug even crashed my game but I couldn't reproduce this. Normally it just does nothing at all.