No Gimp developers on this forum. You should report as a bug
https://gitlab.gnome.org/GNOME/gimp/-/issues
....although from past experience they will (1) ask you to update to Gimp 3.2.2 (2) mark as a duplicate of some other bug and forget about it.
There some work-arounds using tool presets or tags and filter here: https://www.gimp-forum.net/Thread-Text-defaults
https://gitlab.gnome.org/GNOME/gimp/-/issues
....although from past experience they will (1) ask you to update to Gimp 3.2.2 (2) mark as a duplicate of some other bug and forget about it.
There some work-arounds using tool presets or tags and filter here: https://www.gimp-forum.net/Thread-Text-defaults