You can locate an up-to-date list of the Known and Reported issues within Assassin's Creed: Syndicate Forums at the link below:
You can also submit any issues you have within the game from the Support Site you are currently on, from the My Questions page.
From My Questions, go to Ask a Question and submit your issue there.
Be sure to provide as much information as possible when reporting your issue.
We hope you continue to enjoy your game!