I too have the same issue. I created a course with text box entries. Users add answers and are able to come back and edit them at a later date. All works fine with a computer, mouse and keyboard (Windows 10) ut when using an iPad (iOS 15.2) users are unable to re-position the cursor in the text box. It defaults to the beginning of the text and cannot be moved. Tapping onto the text to position the cursor does not work, nor does using the 'virtual trackpad' mode.
I noticed this problem when trying to update the courses using the latest release of Storyline 3 (Dec 2021). It was not a problem when I created the course (back in 2019). The cursor could be positioned as it should be. I assume the change in functionality is something to do with updates in iOS / SL3 in the intervening two years.
I found a 'work-around'.
I went back to the SL3 version I used in 2019 to make the originals and used that to make some styling changes and republished the courses. This works ok but it is obviously not a permananet solution.
Could the Articulate technical folks look into this problem please?