You would think this is a high priority and already testing a fix

In T175463#2505329, @SendHelpPlez wrote:

In T175463#2502042, @doctormozin wrote:

Glad it worked at least temporarily, @SendHelpPlez it is one of the weirdest bugs I've had in 4000 hours of playing, I agree @LoloJones but you can leave the insider program temporarily until devs find a fix. And if I remember correctly insider features are eventually made public after some time anyways.

Yeah, it came back today sadly. My friend said that he fixes his by:

1. Logging out of a server to the character screen.
2. While the game is loaded on that screen he goes and loads YouTube and watches something of 10 minutes.
3. When you resume the game again you should be on the press “A” screen and that’s it.
   
   I’ve tried this multiple times and it hasn’t worked but he swears by it.

Same issue. Can’t aim and shoot or melee. Not part of insiders program either. Tried on wife’s Xbox. Not working. Factory reset my Xbox and then did a fully reset