Hi all,
is this a bug? : When I want to change a dynamic (like here change the fp into p), I double click on the dynamic, the popover opens and I replace the “fp” through “p” then Dorico sometimes doubles the dynamic and writes both dynamics (as you can see in the second line)
Is there some setting what one would have to change, that this is not happening all the time?
Or is it just a bug thats waiting for the next update to be corrected 
AFAIK not regarded as a bug, though it is certainly misleading UI. The issue is that you’re entering a different type of dynamic, the way Dorico handles them – p is an ‘immediate dynamic’ and fp is a ‘combined dynamic’ – so one doesn’t replace the other.
So you have to delete the previous dynamic, either before or after. It’s easier to delete before inputting the new one, if you want to filter to select. (Ironically, given the above distinction, filtering for Immediate Dynamics also gets the combined dynamics!)
This must have been discussed multiple times in the past 5 years. I’ll do a search.…
[Edit: This short thread from Sept. 2020 is the best and most succinct I found.]
I am trying Dorico and I encounter a similar situation when editing dynamics.
It is strange that when you double click a dynamic and then edit it, Dorico creates a new dynamic. It would be great if Dorico would actually edit the existing dynamics since it appears in the box…
Dorico will replace dynamics of the same kind (e.g. if you edit f and type p into the popover, the p will replace the f) but not dyamics of different kinds (e.g. if you edit fp and type p into the popover, you’ll end up with both fp – a combined dynamic – and p – an immediate dynamic). We know this is often not what you want, and we plan to change this in future.