Hi,
Turns out this is behavior is a result of Ableton Preferences that need to be set on your machine.
For each instance of Ableton you need to go to the corresponding Preferences folder and add a file called Options.txt. Inside, copy the following statement:
"-_EnsureKeyMessagesForPlugins"
Details are given here: https://www.ableton.com/en/articles/optionstxt-file-live/
When you restart Ableton the problem should be fixed.
