What error causes misplaced data?

I’m a total newbie here, but taking on the challenge from @RAmeeti to show error happening using a form and data sheet at the same time, but seems not caused by that alone? using 10.2.2b1 (4568). This is same issue as previous thread I posted Field contents copied when finding/selecting "not selected" recorcord - #15 by rclark, but to make things simple, I just made a new database with 50 states info, and did following actions, this took me 20 mins. The point I want to make is, test these actions with the database from @Bernadette, and with other databases and you have an answer, and no need to recommend “text list object” as workaround, etc. because bug was verified and fixed. Once fix is distributed, maybe “misplaced data” does not show up again and using “a form and the data sheet at the same time” doesn’t get blamed either.

Actions: 1) add notes to first record, no other data in other records “Notes” 2) select subset 3) add more notes 4) need info from not visible record, search for that record and double click on it 5) screenshot clearly shows notes from “Alabama” record now appearing in “Massachusetts” record, obviously misplaced data.