Problem in duplicating multicam clips

Hi,

I've been duplicating multicam clips for years now... (well not only duplicating!) and only recently, probably starting 10.3.2, I ran into this apparently stupid issue: if I try to duplicate some existing multicam clip in the browser FCPX sometimes (not always...) refuses! The browser slider moves a bit as if a new clip were now created, but then no new clip is there.

Note: I carefully checked keywords; I tried both the menu item and its shortcut; closed and opened FCPX again; the problem seems related with a specific multicam.

In fact a workaround seems to work: selecting the multicam in the browser, modifying the range selection on it (originally the affected clip was fully selected), and then duplicating. This worked at least once.

Now my questions:

- is this a feature, or am I overlooking some special multicam behavior ?

- any other way out but modifying its range selection ?

Thanks a lot

Piero