i came across the issue that a list that i shared with others to organize a wedding shows up in my business Outlook. As there are many tasks to do for a wedding it blows up my tasks bar.
There is an uservoice about this LINK - but not so much voters.
I found this workaround and want to share it:
Go to Outlook - perform a right click on the bar above the Todos and select "View settings":
Then go to the tab Advanced and add the filter for "in folder"
Select "does not contain" and enter the name (or a part) of your list - let the all start with "PTasks" then you only need one filter. (Don't know what happens if you rename afterwards though)
and - bam - the tasks from your list is gone.