• On Ubuntu 23.04, open Gnome Text Editor.
• switch to "IPA (SIL)" keyboard
• Type

  an
  m
  

• Click after n
• switch to a different application with Alt+Tab and back
• type >

Expected behavior

aŋ
m

Actual behavior

I'm getting different results:

aɱ
m

or

an>
m

Same problem with gedit (has to be installed explicitly: sudo apt update && sudo apt install gedit).

Keyman 17 (17.0.108-1~PR-8509-624.1+lunar1) on Ubuntu 23.04 Wayland. ibus 1.5.28-3sil1~lunar.