When pressing and holding a single character macOS will display a native input method popup window with a list of accented characters. Clicking on any of accented characters, however, does *not* replace the original character and just silently fails in Writer and Impress but not in Calc. Current workaround is to press an accepted character's matching number. Steps to reproduce: 1. Open a new, empty Writer document 2. Press and hold the "a" key and wait for the native input method popup window to appear 3. Click on any of the accented characters in the popup window Expected result: the clicked accented character should overwrite the "a" input in step 2 above. Actual result: the "a" is *not* overwritten.
Assigning to myself. Work-in-progress patch is below: https://gerrit.libreoffice.org/c/core/+/196239