Run code at head and load a phaser and you will see
----- 10 Waveform `Waveform'
Metadata Mismatch (fx=Phaser attr=Maximum Values): param[10]='Waveform'; param metadata value=6 surge value=5 /Users/paul/dev/music/surge/src/common/dsp/effects/SurgeSSTFXAdapter.h:249
which is what happens when the internal param type mismatches the param metadata in the set-effects version of the phaser.
Investigate before 1.4
Run code at head and load a phaser and you will see
----- 10
Waveform`Waveform'Metadata Mismatch (fx=Phaser attr=Maximum Values): param[10]='Waveform'; param metadata value=6 surge value=5 /Users/paul/dev/music/surge/src/common/dsp/effects/SurgeSSTFXAdapter.h:249
which is what happens when the internal param type mismatches the param metadata in the set-effects version of the phaser.
Investigate before 1.4