Multiple selections do not type dead keys in chrome/safari

[benniekiss]

Describe the issue

With the cursor at multiple selections, dead keys (accented characters) are only typed in the main cursor position. In Safari, typing the dead key removes the other selection ranges.

MRE:

1. Open the sandbox in Chrome or Safari and create multiple cursor positions.
2. Type accented character

Safari:

Screen.Recording.2025-11-13.at.16.31.07.mov

Chromium:

Screen.Recording.2025-11-13.at.16.33.19.mov

Browser and platform

Chrome, Safari

Reproduction link

No response

[marijnh]

Attached patch should improve this.

[benniekiss]

@marijnh I don't think this patch improved the issue. The behavior is the same in chrome and safari.

[marijnh]

Hm, right. I tested on Linux, and it looks like MacOS composition events are timed differently, and Safari moves the selection around in odd ways while composing with a dead key. Attached patches make it work for me on MacOS Chrome and Safari.

[benniekiss]

Great. Thank you!