Hello,
I think it has something to do with what I fiddled before using Alfred.
I tried to get the Alfred Snippet behaviour using AppleScript Service but it did not work. And I found Alfred.
Under Alfred, when I define a Snippet using the same key as I used for the AppleScript Services, I get a context proposal corresponding to what I tried to do with the service (see pic).
And it has also an iCloud impact because when I type the same key in Safari on my iPhone, I get the same context proposal :-0.
I thought I had cleaned up the related services. I will have to dig this to get rid of this annoying behaviour.
Finally, under Chrome only, my hypothesis is that hitting the key in question, brings both Alfred and AppleScript Service response so causing the doubling.
I think the problem is that the service hides somewhere. May be I defined it in iCloud by mistakes. I am not very familiar with iCloud so I will have to dig this.
May be you got some info about that type of misbehaviour.
Thanks for you help.
Bin31