Microsoft, I am calling you out on quality of your tech support.
I have a ticket in Outlook's chat about tasks not showing on Outlook startup. Something which is clearly demonstrated on this video.
Practically from the very beginning I've been telling that this looks like a rendering issue (you if you watch the startup frame by frame you can see that tasks are there for a split second), but I played along at first. I checked for updates, I tried Office repair, and then... After you've insisted I even created a new profile. Twice, because you were not able to see original video which was in h.265 (codec which is supposed to be supported by modern Win11 out of the box). Here's the video for reference (this video also shows a transient version of the same issue, when the list of tasks is incomplete).
Somehow you still asked me to try changing default profile, even though it was recorded in the video, that I changed it. Specifically, because I expected that you will need proof of that. I was still annoyed, though. Same as when you asked me for screenshot of data files tab from the settings. I was so annoyed by that, I immediately created a 3rd test profile (since I did not keep the previous ones) to show, that new profile use separate data files.
Today I've reached it, because now I am being asked to create a new Windows profile. How is Windows profile even relevant here? There is NO issue with the data or with getting the data from Outlook servers. There is no technical reason to even consider a different Windows profile.
I am putting my foot down here. I am not going to waste my time on creating a new profile, which may also be considered expansion of attack surface, even if it is deleted afterwards. Because it won't help, and when it does not, you will suggest me Windows reinstallation.
Please, stop deflecting and wasting time. As I've stated in the ticket multiple times already, most likely there is some bug in the startup sequence. Something is clearly failing, possible that the format of data that is provided to a function that renders the list is incorrect. But this is something that developers need to look into. In the code. Get them to do it.