Hmm, please send me your project.
I checked with this QET 0.9 AppImage:
QElectroTech V 0.90+e3afc562b
Compilation : GCC 8.3.0
Built with Qt 5.11.3 - x86_64 - Date : Jan 8 2023 : 05:58:34
Same problem...formula type "+%id +txt+ %{}" -> rendering strings only after saving and re open project..
Strange, that it can be inferred that the above issue has not been tested or reported by users...for a long time...




