Hi! We haven't be able to reproduce this on TextKit 2, though anecdotally on the latest beta I noticed a similar bug in the Mail app composer screen where typing inside a grammar suggestion during the "shimmer" caused the text to temporarily disappear. Would love to adopt TextKit 2 but can't because of FB15241823. Basically if you have a long document, tapping a location in the document to start editing moves the caret to a random location, often thousands of words before the actual user-selected range. We adopted TextKit 2 and got so many user complaints that we had to revert. Let me know if I can provide any more info. @DTS Engineer @DTS Engineer

Thanks. Filed as FB15241823