SharePoint list looks like is opened in Microsoft List even if is fact opened in SharePoint.

Hello All, for now this is just a hypothesis but I think this issue was triggered when Microsoft made their monthly updates to SharePoint.

With the help of others from the forum we managed to pin-point that for some of us the issue started in the second week of May.

https://techcommunity.microsoft.com/t5/sharepoint/how-to-stop-sharepoint-lists-from-opening-in-microsoft-lists/m-p/4158086/highlight/false#M81433 

and for others in April.

https://answers.microsoft.com/en-us/msoffice/forum/all/sharepoint-list-view-ui-is-changed-to-microsoft/3e45ff3b-e078-4599-920d-25e2f36d584f?page=1 

Here you can find the link with all the updates that Microsoft has done in SharePoint.

https://learn.microsoft.com/en-us/officeupdates/sharepoint-updates 

So given this new information I would assume that if they will not fix this with the update from June then most likely in June we will have other people where this issue will manifest, all of the updates in the past months took place in the second week of each month.

AmberSchiffer and ABTOUCC if you want we can move to this thread, is a new one that I have opened and is not marked as "solved" like the one that we have used.