Ubisoft has seemingly run into some technical problems with the Watch Dogs: Legion's online modes, as it has announced it will be delaying some of them ahead of their launch.
As announced by the official Twitter account, they confirmed that one of the modes known as Tactical Op is described as a collection of difficult missions to be played in co-op. The mode is apparently causing the game to crash and is no being delayed to launch on Xbox, PlayStation, and Stadia on March 23.
It's even more grim news for the PC side of things, where a similar issue is causing the game to crash due to an issue with "certain GPUs". The team is apparently working on a fix but due to the severity of the issue, Ubisoft has postponed the online modes with no release window given. They did however say "we will communicate the new launch date as soon as possible."
Lastly, a bug for PlayStation 4 and PlayStation 5 owners is causing some problems in regards to in-game text chat, so that will be available in a limited capacity at launch with a fix coming on March 23rd.