I am unable to reproduce. For me on 3.4.1 / macOS 10.11 , ⌥(Alt)+8 (in fact Alt+1 to 9) creates the relevant interval above the selected note.
Do you have access to another mac to try on?
I cannot do a factory reset as I have a lot of configuration in place.
However I found the issue: it's related to the swiss french keyboard. If I use instead a US configuration the shortcut is working fine.
Comments
I am unable to reproduce. For me on 3.4.1 / macOS 10.11 , ⌥(Alt)+8 (in fact Alt+1 to 9) creates the relevant interval above the selected note.
Do you have access to another mac to try on?
Can do you try a Factory Reset?
https://musescore.org/en/handbook/3/revert-factory-settings
In reply to (No subject) by Riaan van Niekerk
I cannot do a factory reset as I have a lot of configuration in place.
However I found the issue: it's related to the swiss french keyboard. If I use instead a US configuration the shortcut is working fine.