FB17945919: With read-only UITextView or UITextInput, initial selection shows as snapping to words during gesture but doesn’t snap when gesture ends

[douglashill]

Submission Date

2025-06-11

Status

Open

Area

UIKit

Operating System Version

iOS 26

Type

Incorrect/Unexpected Behavior

Description

Steps:

1. Create a non-editable UITextView or custom implementation of UITextInput + UITextInteraction. This is already set up with UITextView in the attached sample project, The whole project is only a few lines of code.
2. Long press and drag to create a selection, ending the drag in the middle of a word. See attached video.

Expected:

Selection text should be snapped to complete words.

Actual:

Selection appears snapped to words during the gesture but doesn’t snap to words after. See attached video.

Notes:

This is a longstanding issue not new in iOS 26.

Our real project doesn’t use UITextView but uses UITextInput + UITextInteraction because we make an SDK for viewing PDF documents so use our own rendering. You can see this in our app at https://apps.apple.com/app/id1120099014 We can provide a more complex sample project using UITextInput + UITextInteraction if that’s helpful. From the outside, it looks like this may be one underlying issue even though it occurs using two APIs.

https://github.com/user-attachments/assets/8dce008b-570d-4d48-818c-d77f600a462b

Sample project

Keywords

No response

Prerequisites

• [x] The title follows the format FB<number>: <title>
• [x] I will keep this issue updated with Apple's responses