Open Radar

 
Summary:
Using an external keyboard, the key command ⌥↑ (option-up) does not work, when used a second time.

Steps to Reproduce:
- Run the attached sample project on an iPad Simulator
- Tap into the UITextView on screen
- Place insertion point in the last Paragaph (e.g. after "cursus")
- Ensure the External keyboard is connected
- Press ⌥↑ (option-up)
- Press ⌥↑ (option-up)

Expected Results:
On the first use of ⌥↑ (option-up), the cursor jumps to the beginning of the paragraph. On the second invocation, the cursor jumps to the paragraph above.

Actual Results:
On the first use of ⌥↑ (option-up), the cursor jumps to the beginning of the paragraph. (correct) On the second invocation, however, the cursor does not move.

Version:
iOS 9.3.1

Notes:
The counterpart command ⌥↓ (option-down) works correctly. There seems to be an issue in UITextInputTokenizer not returning correct positions.

This is a regression from (at least) iOS 8.

Configuration:
Any iOS device

Attachments:
'textedit.zip' was successfully uploaded. http://cl.ly/fkFE