To reproduce: 1. Go to https://whsieh.github.io/examples/clipboard 2. In the Clipboard.writeText section, replace "Hello world" in the text field with "Hello:" 3. Tap on Copy Text. 4. Paste in the text field. Expected: "Hello:" should be inserted. Observed: "hello:" is inserted instead. Likely related to code around `PlatformPasteboardIOS.mm`.
<rdar://problem/106557871>