Korean input: cursor jumps after each character in the note body (macOS desktop app)

When I type Korean in the note body in the macOS desktop app, the cursor moves to an unexpected position after a character is entered. As a result, the text ends up in the wrong order.

Steps to reproduce

1. Open a page in the Capacities desktop app on macOS.
2. Switch the input source to 2-Set Korean.
3. Click in the note body and type "가나".

Expected result The text appears as "가나".

Actual result The text appears as "나가".

Scope

• Affected: note body in the macOS desktop app
• Not affected: other areas of the desktop app, the web version of Capacities in Safari, an earlier version of the desktop app (I don't know the exact version number)
• other apps on the same Mac work just fine

Environment

• Capacities: 1.72.7 (1.72.7)
• Device: MacBook Air (M1, 2020), 16 GB memory
• macOS: 26.6.2 (25G83)
• Input sources: ABC and 2-Set Korean
• Browser used for the web test: Safari 26.6.2 (21624.5.1.11.3)

Attachment A screen recording of the issue is attached.

Screen Recording 2026-11-05 at 1.40.40_PM.mov

capacities-diagnostics.txt

Capacities v1.72.7; none none; Mac OS v10.15.7; Chrome v148.0.7778.280 (WebKit v537.36); Desktop (Electron); 11/5/2026, 1:42:54 PM