We upgraded 2 versions from 0.28x to 0.29x then 0.30.x.

If you want to try to rollback, revert ff0833e585ef8ea4950e850445a005013a33e541 and you'll be back to 0.29.x

Or to rollback further you'd have to rollback a series of commits made on Feb 5 that all start with "egui" (except the 1st one says "Update egui to 0.29.1...")

If you want me to fix it alone, I will have to find out how to do multi-key character composition, something I haven't done.