It's a flutter app we are dealing with and I had this issue on Android with Talkback.
I'm having a simple TextFormField with given maxLength parameter. When swiping through the page, the maxLength (max length of input string) below the textfield is getting the accessibility focus from talkback. When I double tap to trigger the tap action I can edit the textfield though.
When I wrap the TextFormField with a MergeSemantics, the whole thing gets the AccessibilityFocus along with the maxLength display like I wished it would. But then I can't manipulate the Semantics label of the TextFormField when I use the MergeSemantics Widget. What is the correct solution to manipulate/edit the Semantics of the TextFormField with maxLength set?