I managed to create a bad combinator with some piece of attach note cruft on it. It creates an alert for "missing materials for construction", and throws the attach notes magnifying glass icon. see this blueprint: 0eNqVkt1ugzAMhd/F12GCjp+WV5kmFFJ3tQQJSgwaQrz7HJC6Sl011VdJbH8+OckCbTfi4Mky1AuQcTZA/bFAoC+ru3jG84BQAzH2oMDqPu5uXYl1jIks0F+0QVgVkD3jN9TZ+qkALRMT7sxtMzd27Fv0UnCjaU987ZHJJMb1LVnNzsuwwQXpdjbKiMRT8VYomKFOsvRdJp3Jo9kLcgWinb3rmhaveiIBSNcvuZH0eaOFmLiQD9w83HIiz6Oc3KTtFQlqc413CxgxkRVYR8+ydAsFbkCvdy2QSL8beRhfniChHow6/G/7S16Vf3t1oU5wT57/mew0umLcGL0oj4eiun//NX6B7ePcSRfEJGM2JYdjllf5qSqrLC2Lcl1/AMi13fU=
I ignored it when it first happned, but now I have 100's of "requesting material" alerts that can never be filled, and it's hiding actual requests that I'd like to resolve in my factory.