To check the input I use Edit Validate rule.
When entering erroneous data error does not appear.
I set up an Action Set, in which, by changing the value (Event - Change), I use Action "Post value", an error appears, but if I click on the field and remove the cursor from it (without changing the field value, the error disappears from the user's form (in the clipboard displayed)
How to make it so that the error is always displayed?
Can you try defining a Refresh-Section along with Post value? Can you also add screenshots for how the section is designed which consists the text input? Just want to clarify if the field is inside a dynamic layout or in a grid layout.