Forgive me for my lack of clarity.
I have figured out the behavior more exactly.
On my iPad Pro using iPad OS 13.4, using the Safari version of Dynalist online, when adding a date to an item with an !, I then touch a specific Calendar date and the date picker box disappears with no visible date added to the item.
However, if I immediately press Return (there is no Enter button on my apple keyboard), the date Then appears in the item. Then to add a Repeating Date to that Same item, I touch the now visible date on the item and touch the correct repeat value in the date picker box, and again the date query box Immediately disappears but with no visible update to the item until I press return.
Because these changes are invisible, it took me hours to realize what was going on. The Function is not the way Dynalist behaves in any other Version and I could see it confusing a lot of other users.
I can send a short video if you prefer.
I am a huge supporter of this program which I think is the finest app available of its kind.
Thanks,
Tom